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| All Patents in class 254/29R | |||||
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| Number | Date | Patentee | Title | Type | |
| RE57 | Oct. 20, 1843 | L. Disbrow | Imrpovement in apparatus for boring earth for water | well drilling machines | |
| 1,272,749 | Jul. 16, 1918 | C.L. Wilson | Drill Extractor | ||
| 2,670,174 | Feb. 23, 1954 | M.B. Lucker | Pushing or pulling jack | ||