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