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All Patents in class 70/456R | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 373,580 | Nov. 22, 1887 | E.M. Boynton | Pocket Knife | |
![]() | 2,306,970 | Dec. 29, 1942 | C.G. Gunderson, F. MacPherson | Key Retainer |