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All Patents in class 417/443 | |||||
Number | Date | Patentee | Title | Type | |
27,128 | Feb. 14, 1860 | B. Holly | Pump Lift | pumps | |
120,325 | Oct. 24, 1871 | A.K. Rider | Improvement in Air Engines | hot air engines | |
137,765 | Apr. 15, 1873 | R. Dudgeon | Improvement in hydraulic jacks | hydraulic jacks | |
162,044 | Apr. 13, 1875 | E.M. Dudgeon | Improvement in hydraulic jacks | hydraulic jacks | |
302,070 | Jul. 15, 1884 | T.H. Watson | Hydraulic jack | hydraulic jacks | |
2,481,183 | Sep. 06, 1949 | H.R. Welby | Pump Priming Means | reciprocating pumps |