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All Patents in class 81/57.37 | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 1,503,861 | Aug. 05, 1924 | E.B. Stimpson | Rivet guide | |
4,003,417 | Jan. 18, 1977 | L. Cornwell | Self Locking and Unlocking Clamp for Automatic Fastener Driving Tools |