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Ernest J. Pieper, Dillon F. Smith and Clarence C. Vogt received US Patent No. 1,901,984 on March 21, 1933, filed October 10, 1927. It was assigned to Armstrong Cork Co.
The patent's description opens (from the scanned text):
This invention relates to insulatingbodies and process of making the same and is particularly useful in. the manufacture of boards 5 or slabs of heat insulating material. 7 The heat insulating value of a material depends upon its density and-upon the number of small air cells which it contains.
- Author
- Ernest J. Pieper; Dillon F. Smith; Clarence C. Vogt
- Published by
- US Patent Office
- Series
- US Patent No. 1,901,984
- Date
- March 21, 1933
- Library no.
- ACL Doc 22593 · asbestosclaims.law/library/22593
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 2 pages · 285 KB
Where it was listed
- Asbestos, April 1933, in its patents department (the year's issues)
Cite this document
Ernest J. Pieper, Dillon F. Smith, Clarence C. Vogt. “Heat Insulating Bodies, Process of Making (US Patent 1,901,984, 1933).” March 21, 1933. US Patent No. 1,901,984. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22593. https://asbestosclaims.law/library/22593.
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