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| Patents for William G. Zimmerman | |||||
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| Number | Date | Patentee | Title | Type | |
| 995,756 | Jun. 20, 1911 | W.G. Zimmerman | Edger | ||
| 996,034 | Jun. 20, 1911 | W.G. Zimmerman | Cutter-head for edgers | cutterheads | |