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| All Patents in class 142/56 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,095,630 | Jun. 20, 1978 | O.E. Raab, C.E. Kirk | Spindle turning tool | turning chisels | |
| 4,266,583 | May 12, 1981 | O.E. Raab, C.E. Kirk | Spindle turning tool | sharpening jigs and fixtures | |
| 5,640,888 | Jun. 24, 1997 | L.G. Lee | Woodturning scraper burnisher and method of burnishing woodturning | ||
| 6,253,812 | Jul. 03, 2001 | T. Rinehart | Wood Turning Tool | drill bits | |