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| Patents for William F. Zimmermann | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,374,256 | Apr. 24, 1945 | W.F. Zimmermann | Gear Transmission | metalworking machine gearing | |
| 2,580,497 | Jan. 01, 1952 | W.F. Zimmermann | Crank Shaper Ram and Clamp | metal shapers | |