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| Patents for Tower & Lyon Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 803,223 | Oct. 31, 1905 | T.F. Gaynor | Expansion-Auger | adjustable drill bits | |
| 884,111 | Apr. 07, 1908 | O. Tack | Boring-Tool | adjustable drill bits | |