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| All Patents in class 172/741 | |||||
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| Number | Date | Patentee | Title | Type | |
| 259,317 | Jun. 13, 1882 | P. Kettenring | Plow attachment | plows | |
| 1,441,717 | Jan. 09, 1923 | C.H. White | Tool Holder for Cultivators | agricultural tool holders | |
| 1,723,985 | Aug. 06, 1929 | D.E. Richardson | Tool Holder | agricultural tool holders | |