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| Patents for Warren B. Holdridge | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,345,893 | Oct. 10, 1967 | W.B. Holdridge | Radii Cutter | lathe tool holders and tool posts | |
| 3,361,433 | Jan. 02, 1968 | W.B. Holdridge | Collet Closer | collet closers | |
| 3,447,245 | Jun. 03, 1969 | W.B. Holdridge | Method for Cutting Radii on Workpiece | lathe tool holders and tool posts | |
| 4,690,415 | Sep. 01, 1987 | W.B. Holdridge | Hydraulic Nosepiece Assembly for a Collet Closer, and Method | collet closers | |