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All Patents in class 264/51
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
3,666,848May 30, 1972R.C. HarperMethod of Producing Closed Mold Polyurethane Foam Moldings Free of Surface Voids by Flushing the Mold with a Vaporized Halogenated Hydrocarbonmanufacturing processes
3,745,203Jul. 10, 1973R.C. HarperProcess for Molding Polyurethane Utilizing a Mixture of Two Blowing Agentsmanufacturing processes
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