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All Patents in class 175/315 | |||||
Number | Date | Patentee | Title | Type | |
32,193 | Apr. 30, 1861 | F. Kettler | Stump-extractor | specialty woodworking machines | |
1,807,625 | Jun. 02, 1931 | H.J. Hjorth | Valve Wrench | wrenches |