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Patents for Horace F. Parshall | |||||
Number | Date | Patentee | Title | Type | |
480,739 | Aug. 16, 1892 | H.F. Parshall | Commutator for electro-magnetic machines | motor commutators | |
480,740 | Aug. 16, 1892 | H.F. Parshall | Armature for dynamo-electric machines | motor armatures | |
534,079 | Feb. 12, 1895 | H.F. Parshall | Armature for dynamo-electric machines | motor armatures |