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All Patents in class 82/12829 | |||||
Number | Date | Patentee | Title | Type | |
1,598,077 | Aug. 31, 1926 | A.L. Halliday | Commutator Dresser | commutator truing tools | |
1,712,053 | May 07, 1929 | H. Shapan | Commutator-Truing Device | commutator dressing machines |