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William R. Seigle received US Patent No. 1,444,395 on February 6, 1923, filed October 5, 1921.
The patent's description opens (from the scanned text):
My invention relates to the manufacture the corrugated surfaces of one member and of heat insulating materials, and consists the plain surface of the other, and the rela of a mechanism by which a sheet-member tively great length of these channels peradapted to be incorporated in a heat-insumits more air circulation and consequent lating structure, and comprising features convective transfer of heat, than is desir- 70 which contribute cellular construction to the able.
- Author
- William R. Seigle
- Published by
- US Patent Office
- Series
- US Patent No. 1,444,395
- Date
- February 6, 1923
- Library no.
- ACL Doc 22984 · asbestosclaims.law/library/22984
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 313 KB
Where it was listed
- Asbestos, April 1923, in its patents department (the year's issues)
Cite this document
William R. Seigle. “Mechanism for Corrugating and Indenting Plastic Sheet Material (US Patent 1,444,395, 1923).” February 6, 1923. US Patent No. 1,444,395. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22984. https://asbestosclaims.law/library/22984.
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