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Patents for Richard Dudgeon
Patents 1 - 12 of 12
First set of recordsLast set of records
8,203Jul. 08, 1851R. DudgeonPortable hydraulic presshydraulic jacks
22,713Jan. 25, 1859R. DudgeonHydraulic presshydraulic jacks
43,673Aug. 02, 1864R. DudgeonDrilldrill bits
137,765Apr. 15, 1873R. DudgeonImprovement in hydraulic jackshydraulic jacks
271,154Jan. 23, 1883J.C. TannerHydraulic jackhydraulic jacks
297,975May 06, 1884R.H. DudgeonHydraulic jackhydraulic jacks
330,759Nov. 17, 1885H. Traver, J. WeeksHydraulic jackhydraulic jacks
330,760Nov. 17, 1885J. WeeksHydraulic jackhydraulic jacks
334,206Jan. 12, 1886H. Traver, J. WeeksHydraulic jackhydraulic jacks
RE10,865Sep. 13, 1887R.H. DudgeonHydraulic jackhydraulic jacks
369,992Sep. 13, 1887O.H. MechemHydraulic jackhydraulic jacks
395,675Jan. 01, 1889J. WeeksHydraulic punch, &c.hydraulic apparatus
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