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| Patents for Joseph R. Whittles | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,927,007 | Sep. 12, 1933 | J.R. Whittles | Grinding machine | ||
| 1,978,181 | Oct. 23, 1934 | J.R. Whittles | Hydraulically driven surface grinding machine | surface grinders | |