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| Patents for Harry S. Walthers | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,792,205 | Feb. 10, 1931 | V.E. Martin, H.S. Walthers | Cutter head | |
 | 1,802,992 | Apr. 28, 1931 | H.S. Walthers | Circular-cutter mounting | |
 | 1,803,741 | May 05, 1931 | V.E. Martin, H.S. Walthers | Cutter head | |
 | 1,807,185 | May 26, 1931 | H.S. Walthers | Cutter head | |