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All Patents in class 300/12 | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 33,837 | Dec. 03, 1861 | T.C. Hargraves | Improved Broom Vise | |
![]() | 217,359 | Jul. 08, 1879 | R. Fitts | Improvement in chair-seat presses |