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| All Patents in class 417/45 | |||||
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| Number | Date | Patentee | Title | Type | |
| 644,852 | Mar. 06, 1900 | C. Eickemeyer | Electric pump | ||
| 850,277 | Apr. 16, 1907 | C.R. Tatem | System of motor control | motor controls | |
| 1,341,696 | Jun. 01, 1920 | J.T. Wilkin | Proportional governor | pressure regulators | |