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| All Patents in class 74/42 | |||||
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| Number | Date | Patentee | Title | Type | |
| 952,458 | Mar. 22, 1910 | H.I. Finch, C.R. Meston | Oscillating electric fan | ||
| 1,076,554 | Oct. 21, 1913 | J.I. Depew | Power Hammer | drop hammers | |
| 2,305,128 | Dec. 15, 1942 | L.J. Andresen, W.E. Gerbing | Variable speed feed mechanism | industrial machine pulleys and belt drive mechanisms | |