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| All Patents in class 474/126 | |||||
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| Number | Date | Patentee | Title | Type | |
| 983,251 | Jan. 31, 1911 | H.W. Schatz | Variable Speed Mechanism | metalworking variable speed mechanisms | |
| 1,224,954 | May 08, 1917 | W. Oesterlein | Belt-shifter | industrial machine pulleys and belt drive mechanisms | |