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| All Patents in class 200/564 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,548,020 | Aug. 04, 1925 | S.D. Black, A.G. Decker | Reversing means for electric tools | |
| 2,694,116 | Nov. 09, 1954 | E.P. Bullard, III | Electrical Switch | ||