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Harold W. Greider received US Patent No. 1,819,893 on August 18, 1931, filed April 18, 1929. It was assigned to Philip Carey Manufacturing Co.
- Author
- Harold W. Greider
- Published by
- US Patent Office
- Series
- US Patent No. 1,819,893
- Date
- August 18, 1931
- Library no.
- ACL Doc 22651 · asbestosclaims.law/library/22651
- Rights
- US government work, in the public domain.
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Where it was listed
- Asbestos, October 1931, in its patents department (the year's issues)
Cite this document
Harold W. Greider. “Heat Insulation Material (US Patent 1,819,893, 1931).” August 18, 1931. US Patent No. 1,819,893. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22651. https://asbestosclaims.law/library/22651.
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