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| All Patents in class 72/167 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,673,477 | Jun. 12, 1928 | A.T. Yates | Rolling attachment for bending machines | ||
| 1,697,896 | Jan. 08, 1929 | A.T. Yates | Process for bending bars and the like | ||