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| Patents for Severin N. Gundlach | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,814,151 | Jul. 14, 1931 | S.N. Gundlach | Shingle Cutter | splitting and shearing machinery | |
| 1,981,695 | Nov. 20, 1934 | S.N. Gundlach | Shingle Cutter | splitting and shearing machinery | |