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| Patents for Specialty Tools Mfrs., Inc. | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 1,814,151 | Jul. 14, 1931 | S.N. Gundlach | Shingle Cutter | |
![]() | 1,981,695 | Nov. 20, 1934 | S.N. Gundlach | Shingle Cutter | |