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| All Patents in class 74/551.9 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,377,271 | May 29, 1945 | R. Schümann | Flexible Shaft And Air-Cooled Hand Piece | handheld power tool accessories | |
| 3,752,202 | Aug. 14, 1973 | H.F. Condon | Hand Fastener Driving Tool | screwdriver handles | |
| 4,723,582 | Feb. 09, 1988 | D.R. Caspall | Method of making an antislip wooden handle for a hand-held striking tool | ||