71587386
Nov 5, 1949
Apr 24, 1951
WOOD PULP INSULATING MATERIAL FOR THERMAL INSULATING PURPOSES; VAPOR SEAL PAPER FOR CONSTRUCTION PURPOSES TO PREVENT THE PASSAGE OF MOISTURE THROUGH WALLS; AND WOOD FIBER PANELS FOR USE AS INTERIOR AND EXTERIOR WALLS, DOORS, AND TABLE TOPS AND FOR A VARIETY OF NON-ASSOCIATED USES
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