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| Patents for Thomas J. Drummond | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,033,875 | Jul. 30, 1912 | J. Carr | Tool Holder | lathe tool holders and tool posts | |
| 1,064,036 | Jun. 10, 1913 | A.J. Whitfield | Chain Wrench | chain and strap wrenches | |
| 1,120,973 | Dec. 15, 1914 | J. Ridge | Method of Making a File | ||
| 1,198,771 | Sep. 19, 1916 | E. Rivett | Metal-working machine | metal lathes | |