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| Patents for Gertrude Nicholson | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,340,320 | May 18, 1920 | J.M. Brown | Crimped-elbow-bending machine | ||
| CA-273,115 | Aug. 16, 1927 | J.M. Brown | Machine for folding stove-pipe blanks | ||