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| Patents for W. E. Bertsch | |||||
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| Number | Date | Patentee | Title | Type | |
| 888,765 | May 26, 1908 | B.D. Stevens | Driving mechanism for planers | wood planers | |
| 954,146 | Apr. 05, 1910 | B.D. Stevens | Holding device for planer-head bits | cutterheads | |
| 995,024 | Jun. 13, 1911 | H.J. Mitchell | Planer-head | cutterheads | |