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| Quick search: | Patent number: | Patent Date: |
| All Patents in class 451/224 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 285,492 | Sep. 25, 1883 | G.W. King | Harvester Knife Grinder | ||
| 417,001 | Dec. 10, 1889 | A.E. Creigh | Automatic knife-grinder | ||
 | 553,828 | Feb. 04, 1896 | C.W. Blood | Grinding-machine | |
 | 1,016,585 | Feb. 06, 1912 | P.A. Solem | Grinding-machines | |
 | 2,154,999 | Apr. 18, 1939 | F.W. Seybold | Composing room saw | |
 | 2,754,631 | Jul. 17, 1956 | B.B. Stockard, Jr. | Knife grinder | |
| 5,048,236 | Sep. 17, 1991 | C.C. Williams | Saw Blade Tooth Grinder for Saws | ||