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William K. Nelson received US Patent No. 1,641,641 on September 6, 1927, filed July 27, 1927.
The patent's description opens (from the scanned text):
My invention relates to a novel composimaintain the bubbles of the aerated mass but I tion construction or heat insulating material which will not retard to any substantial exand particularly to a material which in final tent the hydration and setting of the gypform will be highly cellular and well adaptr sum, these three conditions or requirements ed for various construction, heat insu a ing being highly important in carrying out the 50 and fire roofin uses. invention.
- Author
- William K. Nelson
- Published by
- US Patent Office
- Series
- US Patent No. 1,641,641
- Date
- September 6, 1927
- Library no.
- ACL Doc 22105 · asbestosclaims.law/library/22105
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 5 pages · 553 KB
Where it was listed
- Asbestos, December 1927, in its patents department (the year's issues)
Cite this document
William K. Nelson. “Composition Construction or Heat Insulating Material (US Patent 1,641,641, 1927).” September 6, 1927. US Patent No. 1,641,641. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22105. https://asbestosclaims.law/library/22105.
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