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Patents for Frank P. Pfleghar | |||||
Number | Date | Patentee | Title | Type | |
51,967 | Jan. 09, 1866 | W. Schollhorn, F.P. Pfleghar | Improvement in Compasses and Calipers | calipers | |
773,338 | Oct. 25, 1904 | F.P. Pfleghar | Tool Holder | tool holders |