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John Allen Heany received US Patent No. 1,564,238 on December 8, 1925, filed January 30, 1920.
The patent's description opens (from the scanned text):
My invention relates to asbestos yarn and to the method of producing the same.
- Author
- John Allen Heany
- Published by
- US Patent Office
- Series
- US Patent No. 1,564,238
- Date
- December 8, 1925
- Library no.
- ACL Doc 21772 · asbestosclaims.law/library/21772
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 5 pages · 495 KB
Where it was listed
- Asbestos, January 1926, in its patents department (the year's issues)
Cite this document
John Allen Heany. “Asbestos Insulating Medium (US Patent 1,564,238, 1925).” December 8, 1925. US Patent No. 1,564,238. US Patent Office. AsbestosClaims.Law Library, ACL Doc 21772. https://asbestosclaims.law/library/21772.
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