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John W. Greenleaf received US Patent No. 2,217,049 on October 8, 1940, filed April 13, 1938. It was assigned to Rockbestos Products Corp.
The patent's description opens (from the scanned text):
This invention relates to an asbestos sliver, particularly for use in the manufacture of insulated electrical conductors.
- Author
- John W. Greenleaf
- Published by
- US Patent Office
- Series
- US Patent No. 2,217,049
- Date
- October 8, 1940
- Library no.
- ACL Doc 23544 · asbestosclaims.law/library/23544
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 233 KB
Where it was listed
- Asbestos, November 1940, in its patents department (the year's issues)
Cite this document
John W. Greenleaf. “Reinforced Asbestos Sliver (US Patent 2,217,049, 1940).” October 8, 1940. US Patent No. 2,217,049. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23544. https://asbestosclaims.law/library/23544.
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