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| Patents for K. Allen | |||||
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| Number | Date | Patentee | Title | Type | |
| 858,913 | Jul. 02, 1907 | R.G. Sauer | Drafting Instrument | squares | |
| 898,990 | Sep. 15, 1908 | A.T. Raiford | Wrench | ratchet wrenches | |
| 979,330 | Dec. 20, 1910 | J.C. Noll | Wrench | quick adjust wrenches | |
| 999,104 | Jul. 25, 1911 | J. Erickson | Combined Compass, Divider, and Scribe | scribes | |