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All Patents in class 476/40 | |||||
Number | Date | Patentee | Title | Type | |
197,472 | Nov. 27, 1877 | C.W. Hunt | Improvement in counter-shafts for driving machinery | industrial machine mechanisms | |
529,713 | Nov. 27, 1894 | H.H. Cummings | Speed Changing and Reversing Mechanism | metalworking variable speed mechanisms | |
529,714 | Nov. 27, 1894 | H.H. Cummings | Speed Changing and Reversing Mechanism | metalworking variable speed mechanisms | |
623,140 | Apr. 18, 1899 | H.H. Cummings | Drilling-machine | drill presses |