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Alan R. Mcgarvey and Conral C. Callis received US Patent No. 2,423,839 on July 15, 1947, filed May 1, 1942. It was assigned to Armstrong Cork Co.
The patent's description opens (from the scanned text):
The invention relates especially to magnesia inslution of the type known to the art as 85% ma nesia and particularly to that type of insulation prepared according to the method set forth in the copending application of Alan R.
- Author
- Alan R. Mcgarvey; Conral C. Callis
- Published by
- US Patent Office
- Series
- US Patent No. 2,423,839
- Date
- July 15, 1947
- Library no.
- ACL Doc 22925 · asbestosclaims.law/library/22925
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 7 pages · 803 KB
Where it was listed
- Asbestos, October 1947, in its patents department (the year's issues)
Cite this document
Alan R. Mcgarvey, Conral C. Callis. “Magnesia Insulation (US Patent 2,423,839, 1947).” July 15, 1947. US Patent No. 2,423,839. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22925. https://asbestosclaims.law/library/22925.
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