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| Patents for C. W. Hills | |||||
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| Number | Title | Classification(s) | |||
| 420,272 | Tool For Fastening Hose to Couplings | 81/9.3 | |||
| 758,191 | Coaling-station | 235/81R, 414/355, 414/360, 414/595 | |||
| 840,369 | Automatic lathe | 142/24, 142/5, 144/223, 144/237 | |||
| 854,872 | Lock-seaming machine | 413/27, 413/32, 413/45 | |||
| 877,135 | Flanging-machine | 413/70, 72/88 | |||