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Charles A. Charron received US Patent No. 3,539,446 on November 10, 1970, filed December 29, 1967.
- Author
- Charles A. Charron
- Published by
- US Patent Office
- Series
- US Patent No. 3,539,446
- Date
- November 10, 1970
- Library no.
- ACL Doc 23249 · asbestosclaims.law/library/23249
- Rights
- US government work, in the public domain.
Read or download
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Where it was listed
- Asbestos, January 1971, in its patents department (the year's issues)
Cited on this site
Cite this document
Charles A. Charron. “Oil filter paper including phenolic resin and chrome oxide and method for making same (US Patent 3,539,446, 1970).” November 10, 1970. US Patent No. 3,539,446. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23249. https://asbestosclaims.law/library/23249.
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