Title:
Laminated gypsum core-board
United States Patent 2884779


Inventors:
Buergin, Rodney G.
Hovind, John K.
Application Number:
US37748253A
Publication Date:
05/05/1959
Filing Date:
08/31/1953
Assignee:
NAT GYPSUM CO
Primary Class:
Other Classes:
52/241, 52/592.1
International Classes:
E04C2/04
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US Patent References:
Foreign References:
GB540302A1941-10-13
GB541733A1941-12-09