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| All Patents in class 56/400.01 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,022X | Jun. 08, 1830 | E.P. Parmelee | Iron tooth rake | rakes | |
| 509,999 | Dec. 05, 1893 | W. Cronk | Hand Rake | rakes | |
| 670,417 | Mar. 26, 1901 | W. Cronk | Hand Rake | rakes | |
| 774,980 | Nov. 15, 1904 | W. Cronk | Rake | rakes | |
| 1,045,263 | Nov. 26, 1912 | E.G. Cronk | Rake | rakes | |
| 1,118,397 | Nov. 24, 1914 | E.G. Cronk | Rake | rakes | |
| 1,190,734 | Jul. 11, 1916 | W. Cronk | Rake | rakes | |