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Walter M. Perry and Thomas C. Pond received US Patent No. 2,299,721 on October 20, 1942, filed June 29, 1939. It was assigned to Johns Manville.
- Author
- Walter M. Perry; Thomas C. Pond
- Published by
- US Patent Office
- Series
- US Patent No. 2,299,721
- Date
- October 20, 1942
- Library no.
- ACL Doc 22922 · asbestosclaims.law/library/22922
- Rights
- US government work, in the public domain.
Read or download
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Where it was listed
- Asbestos, November 1942, in its patents department (the year's issues)
Cite this document
Walter M. Perry, Thomas C. Pond. “Magnesia Composition (US Patent 2,299,721, 1942).” October 20, 1942. US Patent No. 2,299,721. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22922. https://asbestosclaims.law/library/22922.
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