Static structures (e.g. – buildings) – Sectioned imperforate facing within perpheral frame; e.g.,...
Patent
1991-05-14
1992-10-20
Group, Karl
Static structures (e.g., buildings)
Sectioned imperforate facing within perpheral frame; e.g.,...
5230912, 106732, 106772, 428921, E06B 370
Patent
active
051559595
ABSTRACT:
Firedoor constructions manufactured from board compositions containing calcium sulfate in hemi-hydrate or anhydrous form and fibrous additives, including pulped paper fibers preferably derived from waste newspaper, capable of being formed into firedoor members having superior mechanical properties and/or fire resistance.
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Fowler George F.
Francis Hubert C.
Richards Turner W.
Georgia-Pacific Corporation
Group Karl
Marcantoni Paul
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