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| All Patents in class 82/12 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,128,657 | Apr. 14, 1964 | J.C. Hebert | Pivoting Tracing Tool | form producing lathes | |
| 3,139,083 | Jun. 30, 1964 | E. Gosney, Jr., J.M. Morgan, Jr., W.B. Seidel | Machine Tool Contouring Mechanism | profiling machines | |
| 3,345,893 | Oct. 10, 1967 | W.B. Holdridge | Radii Cutter | lathe tool holders and tool posts | |
| 3,447,245 | Jun. 03, 1969 | W.B. Holdridge | Method for Cutting Radii on Workpiece | lathe tool holders and tool posts | |