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All Patents of Type: knurling tools | |||||
Number | Date | Patentee | Title | Type | |
2,579,611 | Dec. 25, 1951 | J.E. Poorman | Knurling Tool | knurling tools | |
2,870,661 | Jan. 27, 1959 | J.E. Poorman | Knurling Tool | knurling tools | |
2,870,662 | Jan. 27, 1959 | J.E. Poorman | Cross-Slide Knurling or Like Tool | knurling tools |