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| Patents for W. E. Chaffee | |||||
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| Number | Date | Patentee | Title | Type | |
| 117,679 | Aug. 01, 1871 | G.B. Phillips | Improvement in Wrenches | wrenches | |
| 160,179 | Feb. 23, 1875 | D. Gilbert | Improvement in Pipe-Wrenches | chain and strap wrenches | |
| 161,970 | Apr. 13, 1875 | F.F. Landis | Portable Steam Engine | portable steam engines | |
| 164,665 | Jun. 22, 1875 | S. Tilton | Improved Instrument to Keep Calves from Sucking | animal weaners | |
| 184,311 | Nov. 14, 1876 | H.W. Warner | Manufacture of Axes | axes | |
| 304,633 | Sep. 02, 1884 | R.I. Frambes | Level | inclinometers | |