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| All Patents in class 74/504 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,024,309 | Apr. 23, 1912 | E.P. Bullard, Jr. | Adjusting Device for Feed Shafts | metalworking machine mechanisms | |
| 1,169,485 | Jan. 25, 1916 | F.W. Hodges | Valve | valves | |
| 1,204,684 | Nov. 14, 1916 | H.M. Norris | Gearing | metalworking speed changing mechanisms | |
| 2,186,168 | Jan. 09, 1940 | W.L. Groene, W.F. Groene | Feed Mechanism for Lathes | metalworking machine mechanisms | |