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| All Patents in class 248/316.4 | |||||
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| Number | Date | Patentee | Title | Type | |
| 644,589 | Mar. 06, 1900 | F.W. Förster | Foot Power Hammer | drop hammers | |
| 2,208,860 | Jul. 23, 1940 | E.F. Smart | Adjustable Clip | tool holding clips | |
| 2,473,643 | Jun. 21, 1949 | J.M. Froblom | Toolmaker's Vise or Clamp | toolmakers vises | |