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| Patents Granted on 1944-04-04 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,345,563 | Apr. 04, 1944 | R.L. Alcorn, Jr. | Hydraulically operated drop hammer | drop hammers | |
| 2,345,581 | Apr. 04, 1944 | H.J. Caldwell | Machine tool | ||
| 2,346,028 | Apr. 04, 1944 | L.B. Huthsing, C.M. Gregory | Variable speed belt drive | drill presses | |
| 2,346,094 | Apr. 04, 1944 | E.A. Vogel | Ignition Device | ignition systems | |