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George B. Johnston received US Patent No. 2,414,533 on January 21, 1947, filed May 5, 1942. It was assigned to Philip Carey Manufacturing Co.
The patent's description opens (from the scanned text):
This invention relates to a panel or board of laminated structure comprising layers of felt or paper, preferably impregnated with a water-. proofing bituminous material, bonded together with adhesive material which sets in a substantially hard rigid character to give the laminated structure a board-like rigidity and render it'fire and moisture resistant.
- Author
- George B. Johnston
- Published by
- US Patent Office
- Series
- US Patent No. 2,414,533
- Date
- January 21, 1947
- Library no.
- ACL Doc 22848 · asbestosclaims.law/library/22848
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 367 KB
Where it was listed
- Asbestos, March 1947, in its patents department (the year's issues)
Cite this document
George B. Johnston. “Laminated Board (US Patent 2,414,533, 1947).” January 21, 1947. US Patent No. 2,414,533. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22848. https://asbestosclaims.law/library/22848.
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