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| Patents for D. T. Davies | |||||
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| Number | Date | Patentee | Title | Type | |
| 625,867 | May 30, 1899 | A.M. Benson | Door-looking burglar-alarm | ||
| 809,394 | Jan. 09, 1906 | A. Pedersen | Electrically-operated portable drill | handheld power tools | |
| 932,607 | Aug. 31, 1909 | J.J. Grant | Thread-cutting attachment for automatic lathes | automatic lathes | |