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All Patents in class 476/49 | |||||
Number | Date | Patentee | Title | Type | |
1,015,031 | Jan. 16, 1912 | A.B. Landis | Change-speed gearing | industrial machine gearing | |
1,017,877 | Feb. 20, 1912 | A.B. Landis | Change-speed gearing | industrial machine gearing |