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| Patents for Grover P. Holther Jr. | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,822,513 | Jul. 09, 1974 | G.P. Holther, Jr. | Bench grinder with flexible shaft accessory | bench or pedestal grinders | |
| CA-1,002,332 | Dec. 28, 1976 | G.P. Holther, Jr. | Coupler for bench grinder | bench or pedestal grinders | |