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| All Patents in class 29/DIG.051 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,550,712 | Aug. 25, 1925 | J.A. Smith | Grinding machine | bench or pedestal grinders | |
| 2,057,488 | Oct. 13, 1936 | F.I. Hochstadt | Apparatus for use with type slug saws | printer | |