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| Patents for James Bowen | |||||
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| Number | Date | Patentee | Title | Type | |
| 882,290 | Mar. 17, 1908 | J. Bowen | Machine for Cutting Screws, &c. | screwcutting lathes | |
| 893,431 | Jul. 14, 1908 | J. Bowen | Machine for Cuting Screw, & c. | screwcutting lathes | |
| 1,177,376 | Mar. 28, 1916 | J. Bowen | Milling Machine | milling machines | |