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| All Patents in class 82/19 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,983,174 | May 09, 1961 | E.H. Johnson, W.A. Ehrlich, E.A. Zukowski | Contour Facing Attachment | ||
| 3,128,657 | Apr. 14, 1964 | J.C. Hebert | Pivoting Tracing Tool | form producing lathes | |