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All Patents in class 192/111.11 | |||||
Number | Date | Patentee | Title | Type | |
174,190 | Feb. 29, 1876 | D.W. Burnham | Pulley-Clutch | industrial machine pulleys and belt drive mechanisms | |
186,296 | Jan. 16, 1877 | A.B. Bean | Clutch | metalworking power transmission |