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| All Patents in class 254/355 | |||||
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| Number | Title | Classification(s) | |||
| 301,153 | Hoisting apparatus | 192/17R, 192/76, 254/355 | |||
| 1,716,738 | Clutch Pulley Control | 192/215, 254/355, 475/309, 475/900 | |||