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| Patents for Rockford Tool Co. | |||||
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| Number | Title | Classification(s) | |||
| 1,338,757 | Relieving attachment for lathes | 82/19 | |||
| 1,491,523 | Adjustable drilling and balancing tool | 173/44, 173/50, 408/52, 73/480 | |||
| 1,598,172 | Lathe | 82/117, 82/138 | |||