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113:. Although many dentists regarded the patents as an attack on the profession, others regarded Taggart's invention as worthy of patent protection. Crouse and the DPA joined the latter camp. The DPA set up a licensing scheme under which its members could send in $ 75 for a license on Taggart's machine and process, or $ 15 for the process alone.
116:
The DPA's further inclusion of a provision in its bylaws forbidding members to contest the
Taggart patent incensed many in the dental community. One group formed the National Dental Protective Association in 1909. Taggart's process patent was invalidated by the DC Court of Appeals in
35:
on dental procedures. He was a charter member of the
Illinois State Dental Society, and founded the Dental Protective Association, an organization that litigated against process patents in dentistry, serving as its president until 1913. He also served a term as president of the
102:
The DPA was initially organized to defend against patent claims brought against dentists by the
International Tooth Crown Company, which held patents on important improvements in crown and bridge work. The DPA defeated every patent suit it fought through at least 1900.
87:
Crouse first returned to Mount
Carroll to practice, but moved to Chicago in 1868. Shortly thereafter he became one of the charter members of the state dental association.
209:
95:
In 1888, Crouse founded the Dental
Protective Association (DPA) to protect against legal threats to the profession. From 1895 to 1908, the Association published the
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Criticism of the DPA arose in 1898 due to Crouse's having established a for-profit company with a very similar name, the Dental
Protective Supply Company.
336:
186:
White, J. D.; McQuillen, John Hugh; Ziegler, George Jacob; White, James
William; Kirk, Edward Cameron; Anthony, Lovick Pierce (1914).
351:
72:
31:
in
Chicago in the 19th and early 20th centuries, best known for his work organizing dentists to litigate against the use of
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341:
49:
37:
109:
Deeper problems arose in 1910 over Dr. William
Taggart's invention of a method of preparing gold inlay
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53:
52:, on September 15, 1842, the son of Daniel and Mary Crouse. He later moved with his parents to
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8:
130:
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Triennial
Catalogue of the Mount Carroll Seminary for the Years Ending July 7, 1862
71:
Crouse practiced dentistry in Mount Carroll starting in 1864, then traveled to the
215:
110:
65:
320:
57:
271:
History of Dentistry: A Practical Treatise for the Use of Dental Students
16:
129:
Crouse died of heart failure on January 16, 1914. He was buried at
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in Chicago. The DPA remained in operation through at least 1922.
28:
32:
185:
121:
in 1912, dealing a further blow to the DPA's prestige.
267:"Dental Protective Associations in the United States"
229:
Hinkins, J.E.; Bentley, C.E.; Noyes, Edmund (1915).
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40:, then known as the National Dental Association.
318:
90:
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254:
252:
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304:"The National Dental Protective Association"
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68:), where Crouse attended from 1859 to 1862.
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56:. He and his siblings first attended the
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337:People from Chester County, Pennsylvania
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177:
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15:
319:
264:
82:
73:Pennsylvania College of Dental Surgery
301:
222:
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285:"The Dental Protective Association"
124:
13:
14:
363:
265:Taylor, James Anderson (1922).
352:19th-century American dentists
295:
277:
202:
1:
136:
91:Dental Protective Association
159:"John Nathan Crouse, D.D.S."
50:Chester County, Pennsylvania
7:
38:American Dental Association
10:
368:
188:"Dr. John Nathan Crouse"
162:Dental Items of Interest
75:, where he obtained his
44:Early life and education
302:Summa, Richard (1911).
99:as its official organ.
54:Mount Carroll, Illinois
289:American Dental Weekly
62:Mount Carroll Seminary
21:
20:Dr. John Nathan Crouse
347:Shimer College alumni
19:
342:People from Chicago
273:. pp. 197–198.
83:Professional career
48:Crouse was born in
119:Boynton v. Taggart
27:(1842–1914) was a
25:John Nathan Crouse
22:
235:The Dental Review
231:"Dr. J.N. Crouse"
192:The Dental Cosmos
131:Rosehill Cemetery
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125:Death and legacy
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60:, and then the
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216:Shimer College
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66:Shimer College
58:common schools
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42:
9:
6:
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3:
2:
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308:Dental Briefs
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97:Dental Digest
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30:
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291:: 625. 1898.
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238:
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218:. July 1862.
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168:: 234. 1914.
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70:
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24:
23:
332:1914 deaths
327:1842 births
321:Categories
241:: 417–418.
137:References
79:in 1867.
111:fillings
64:(later
33:patents
29:dentist
310:: 871.
198:: 395.
77:DDS
323::
306:.
287:.
269:.
247:^
239:29
237:.
233:.
214:.
196:56
194:.
190:.
174:^
166:36
164:.
144:^
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