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All Patents of Type: valves
Patents 1 - 3 of 3
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NumberDatePatenteeTitleType
1,346,204Jul. 13, 1920R.M. HvidValve for Hydrocarbon Enginevalves
1,346,205Jul. 13, 1920R.M. HvidOil Burning Enginevalves
1,476,012Dec. 04, 1923R.M. HvidFuel Supply Valvevalves
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