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| All Patents in class 200/417 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,245,860 | Nov. 06, 1917 | S.D. Black, A.G. Decker | Electrically-driven tool | handheld power drills | |
| 1,492,095 | Apr. 29, 1924 | S.D. Black, A.G. Decker | Electrically-driven tool | handheld power tools | |
| 1,529,910 | Mar. 17, 1925 | R.A. Norling | Grip-handle switch for electric drills | handheld power drills | |