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All Patents in class 470/197 | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 16,372 | Jan. 13, 1857 | R. Brayton | Making Nuts and Washers | |
40,815 | Dec. 08, 1863 | O.C. Burdict | Nut Machine | ||
![]() | 138,066 | Apr. 22, 1873 | J. Braun | Improvement in nut-machines | |
1,119,492 | Dec. 01, 1914 | J.R. Blakeslee | Mechanism for Making Nuts and the Like | ||
1,961,442 | Jun. 05, 1934 | D.E. Johnson | Tool Holder |