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Patents for Willard H. Kempton | |||||
Number | Date | Patentee | Title | Type | |
1,284,362 | Nov. 12, 1918 | W.H. Kempton | Molded commutator-cylinder | motor commutators | |
1,284,524 | Nov. 12, 1918 | C.E. Wilson, W.H. Kempton, A.J. Bastian | Molded commutator-cylinder | motor commutators |