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| All Patents in class 74/438 | |||||
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| Number | Date | Patentee | Title | Type | |
| 145,398 | Dec. 09, 1873 | E. Coapman | Improvement in machines for bending hoops | hoop making machines | |
| 305,648 | Sep. 23, 1884 | B.D. Whitney | Gearing | industrial machine gearing | |
| 343,352 | Jun. 08, 1886 | B.D. Whitney | Gearing | woodworking machine mechanisms | |
| 610,319 | Sep. 06, 1898 | J.W. Brown, Jr. | Double Turret Lathe | turret lathes | |