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| Patents for Frank H. Pierpont | |||||
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| Number | Date | Patentee | Title | Type | |
| 349,496 | Sep. 21, 1886 | R. Hayden | Wire Cutter | pliers | |
| 352,004 | Nov. 02, 1886 | F.H. Richards | Saw | insertable saw teeth | |
| 515,175 | Feb. 20, 1894 | F.H. Pierpont, L.T. Snow | Reducing Mechanism for Steam Engine Indicator | reducing wheels | |
| 679,779 | Aug. 06, 1901 | F.H. Pierpont | Micrometer | micrometers | |