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Armand V. Pretot received US Patent No. 2,342,490 on February 22, 1944, filed July 9, 1940. It was assigned to Johns Manville.
- Author
- Armand V. Pretot
- Published by
- US Patent Office
- Series
- US Patent No. 2,342,490
- Date
- February 22, 1944
- Library no.
- ACL Doc 22204 · asbestosclaims.law/library/22204
- Rights
- US government work, in the public domain.
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Where it was listed
- Asbestos, March 1944, in its patents department (the year's issues)
Cite this document
Armand V. Pretot. “Door or Like Unit (US Patent 2,342,490, 1944).” February 22, 1944. US Patent No. 2,342,490. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22204. https://asbestosclaims.law/library/22204.
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