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Herbert William Ashman received US Patent No. 2,417,899 on March 25, 1947, filed October 11, 1944.
The patent's description opens (from the scanned text):
The invention relates to any roofs that are technically called flat. v My principal object is to provide sucha roof with an entirely diierent kind ci covering which will be waterproof, will provide a light-coloured surface that will reflect the suns rays and will be hard enough to carry the normal traiiic on a at roof.
- Author
- Herbert William Ashman
- Published by
- US Patent Office
- Series
- US Patent No. 2,417,899
- Date
- March 25, 1947
- Library no.
- ACL Doc 23574 · asbestosclaims.law/library/23574
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 383 KB
Where it was listed
- Asbestos, May 1947, in its patents department (the year's issues)
Cite this document
Herbert William Ashman. “Roof and Roofing for use Therein (US Patent 2,417,899, 1947).” March 25, 1947. US Patent No. 2,417,899. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23574. https://asbestosclaims.law/library/23574.
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