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Charles F. Hettinger received US Patent No. 1,808,774 on June 9, 1931, filed August 12, 1930.
The patent's description opens (from the scanned text):
This invention relates to sheet packing and i has for an object to provide a packing which will be sufliciently soft to flow into the minute crevices of the faces between which. the seal is to be made, and yet keep the invention, application Serial No. 758,789, filed December 30, 1924, allowed June 19, 1926, and has for an object to provide, a sheet packing, identical upon opposite sides, each side presenting indentations or cavities, produced by dies or rollers, provided with pyramids properly spaced to reversely interpose the pyramids ...
- Author
- Charles F. Hettinger
- Published by
- US Patent Office
- Series
- US Patent No. 1,808,774
- Date
- June 9, 1931
- Library no.
- ACL Doc 23632 · asbestosclaims.law/library/23632
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 6 pages · 493 KB
Where it was listed
- Asbestos, September 1931, in its patents department (the year's issues)
Cite this document
Charles F. Hettinger. “Sheet Packing (US Patent 1,808,774, 1931).” June 9, 1931. US Patent No. 1,808,774. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23632. https://asbestosclaims.law/library/23632.
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