Fibrous wall board and process for producing the same
United States Patent 1447708

Inventors:
Caffrey, James H.
Publication Date:
03/06/1923
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Assignee:
Caffrey, James H.
Primary Class:
427/243
Other Classes:
428/134, 52/443, 427/276, 264/119, 428/921, 427/289, 200/DIG.003, 83/320, 28/106
International Classes:
B28B1/52