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| All Patents in class 192/89.27 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 144,178 | Oct. 28, 1873 | C.V. Woerd | Watchmakers' Lathes | |
 | 915,298 | Mar. 16, 1909 | W.G. Klemm | Grinding-machine or the like | |
 | 1,043,406 | Nov. 05, 1912 | R.J. Denio | Clutch | |
 | 1,437,319 | Nov. 28, 1922 | A.B. Landis | Automobile clutch | |
| 1,709,339 | Apr. 16, 1929 | F.B. Cockburn | Clutch Mechanism for Lathe Apron Transmission | ||
 | 3,005,527 | Oct. 24, 1961 | A.I. Zagar | Positive drive tapping attachments | |