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| All Patents in class 72/12.2 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,765,169 | Aug. 23, 1988 | C.R. Bradlee | Method of tension leveling non-homogeneous metal sheet | ||
| 4,936,124 | Jun. 26, 1990 | M.B. Martincic | Roll Forging Machine and Method | forging machines | |