Asphalt-impregnated kraft paper panel board
United States Patent 2721816
US Patent References:
Waterproof sheet structure
- - 1694523
Panel board and method of making same
- - 2073894
Composite panel board
- - 2278146
Fusible coating composition
- - 2299144
Panel facing
- - 2448357
Waterproof sheet structure
- - 1694523
Panel board and method of making same
- - 2073894
Composite panel board
- - 2278146
Fusible coating composition
- - 2299144
Panel facing
- - 2448357
Inventors:
Wood, Robert H.
Publication Date:
10/25/1955
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Assignee:
SIMPLEX PAPER CORP
Primary Class:
International Classes:
D21J1/08; D21J1/16; E04C2/16; D21J1/00; E04C2/10