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All Patents in class 451/140 | |||||
Number | Date | Patentee | Title | Type | |
2,000,614 | May 07, 1935 | E.G. Roehm | Grinding Machine | grinding machines | |
2,043,408 | Jun. 09, 1936 | E.F. Haas | Grinding Machine | grinding machines | |
2,834,160 | May 13, 1958 | G.E. Lillie | Grinding machine | grinders | |
2,962,840 | Dec. 06, 1960 | C.H. Werth | Grinding apparatus | grinders |