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| All Patents in class 83/631 | |||||
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| Number | Date | Patentee | Title | Type | |
| 138,201 | Apr. 22, 1873 | J.J. Safely | Portable Punches | auxiliary wrenches | |
| 2,047,322 | Jul. 14, 1936 | R.T. Hazelton | Shears for Sheet Metal | metal shearing machines | |
| 5,056,375 | Oct. 15, 1991 | K. Kapton, S.O. Sutton, B.D. Wixey | Spindle adjustment mechanism | ||