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| Patents for Winslow Product Engineering Corp. | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,067,548 | Dec. 11, 1962 | J.C. Winslow | Drill Pointing Machine | drill grinders | |
| 3,209,493 | Oct. 05, 1965 | H.O. Houser | Drill Pointing Machine | drill sharpening machines | |
| 32,666,194 | Aug. 16, 1966 | J.C. Winslow | Machine For Grinding Conical Drill Points | drill sharpening machines | |
| 3,543,445 | Dec. 01, 1970 | J.R. Southland, E. Borchert, III | Apparatus for grinding drills | drill grinders | |