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| Patents for Theodore C. Warner | |||||
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| Number | Date | Patentee | Title | Type | |
| 385,414 | Jul. 03, 1888 | G.W. Huber | Brace for screw-drivers, bits, etc. | spiral screwdrivers | |
| 391,639 | Oct. 23, 1888 | J.A. Palmer | Steam Generator | portable boilers | |