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| Patents for Lempco Industrial, Inc. | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,997,778 | Aug. 29, 1961 | C.R. Barkley | Apparatus for assembling and securing ball bearings within a retainer | dies for punch presses | |
| 3,386,781 | Jun. 04, 1968 | W.J. Blazek, C.D. Hillis | Die set having readily demountable guide pins and bushings | dies for punch presses | |
| 3,452,633 | Jul. 01, 1969 | E.J. Hammon | Die set shank construction | dies for punch presses | |