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| Patents for J. J. Greenough | |||||
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| Number | Date | Patentee | Title | Type | |
| 203,384 | May 07, 1878 | G.N. Stearns | Improvement in hollow augers | hollow bits | |
| 378,896 | Mar. 06, 1888 | J. Mooney | Screw-Clamp | clamps | |