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| Patents Granted on 1971-11-30 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,623,275 | Nov. 30, 1971 | C.G. Koella | Composite Abrasive Finishing Tool | gear cutting tools | |
| 3,623,516 | Nov. 30, 1971 | C.E. Kirk | Radial saw turntable | radial arm saws | |
| 3,623,518 | Nov. 30, 1971 | J.P. Nicotra | Antisplinter insert for portable saws | ||