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William F. Astley received US Patent No. 2,191,875 on February 27, 1940, filed March 10, 1938.
The patent's description opens (from the scanned text):
The present invention relates to methods and machines for making insulation, and is particularly concerned with methods and machines for making a unit of insulation that is adapted 6 to be used in making a heat insulating material of the type covered by my prior application, Ser.
- Author
- William F. Astley
- Published by
- US Patent Office
- Series
- US Patent No. 2,191,875
- Date
- February 27, 1940
- Library no.
- ACL Doc 22892 · asbestosclaims.law/library/22892
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 8 pages · 644 KB
Where it was listed
- Asbestos, April 1940, in its patents department (the year's issues)
Cited on this site
Cite this document
William F. Astley. “Machine for Making Insulation (US Patent 2,191,875, 1940).” February 27, 1940. US Patent No. 2,191,875. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22892. https://asbestosclaims.law/library/22892.
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