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| Patents for Frank H. La Pierre | |||||
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| Number | Date | Patentee | Title | Type | |
| 556,060 | Mar. 10, 1896 | F.H. La Pierre | Die and Die Holder | taps and dies | |
| 734,792 | Jul. 28, 1903 | H.M. Albee | Engraving or carving machine | die sinkers | |