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Patents for Richard H. Dudgeon
Patents 1 - 3 of 3
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
297,975May 06, 1884R.H. DudgeonHydraulic jack
RE10,865Sep. 13, 1887R.H. DudgeonHydraulic jack
478,530Jul. 05, 1892J. WeeksHorizontal hydraulic jack
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