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| All Patents in class 409/5 | |||||
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| Number | Date | Patentee | Title | Type | |
| 806,075 | Nov. 28, 1905 | T. Fawcus | Spiral Gear Cutting Machine | gear making machines | |
| 1,104,482 | Jul. 21, 1914 | H.J. Eberhardt | Gear Cutting Machine | gear making machines | |
| 1,516,477 | Nov. 18, 1924 | J.K. Schofield | Lost Motion Means for Gear Hobbing Machines | gear hobbing machines | |
| 2,769,375 | Nov. 06, 1956 | A.D. Moncrieff | Hobbing Machine | gear making machines | |