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| All Patents in class 264/85 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 3,666,848 | May 30, 1972 | R.C. Harper | Method of Producing Closed Mold Polyurethane Foam Moldings Free of Surface Voids by Flushing the Mold with a Vaporized Halogenated Hydrocarbon | ||