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| All Patents in class 72/110 | |||||
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| Number | Date | Patentee | Title | Type | |
| 455,186 | Jun. 30, 1891 | A.S. Elmore | Apparatus for Loosening Tubes From Mandrels | electrical discharge machining | |
| 3,625,263 | Dec. 07, 1971 | J.F. Kopczynski | Roll bending machine and method | ||
| 3,672,411 | Jun. 27, 1972 | J.F. Kopczynski | Straightening machine for elongated workpieces | ||
| 3,783,910 | Jan. 08, 1974 | J.F. Kopczynski | Bending machine for straightening elongated workpieces | ||