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| Patents for Warren Bornt Holdridge | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,452,757 | Nov. 02, 1948 | W.B. Holdridge | Lathe radii attachment | metal lathe accessories and attachments | |
| 3,070,238 | Dec. 25, 1962 | W.B. Holdridge | Automatic bar feeder for lathe | metal lathe accessories and attachments | |