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Harold S. Ashenhurst received US Patent No. 1,608,690 on November 30, 1926, filed August 7, 1924.
The patent's description opens (from the scanned text):
My invention relates to the construction of bliilding blocks composed of cellular materia In the preferred form the invention has to do with the casting of relatively large blocks of cementitious material, then dividing the blocks into smaller units for use in building operations.
- Author
- Harold S. Ashenhurst
- Published by
- US Patent Office
- Series
- US Patent No. 1,608,690
- Date
- November 30, 1926
- Library no.
- ACL Doc 23476 · asbestosclaims.law/library/23476
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 424 KB
Where it was listed
- Asbestos, February 1927, in its patents department (the year's issues)
Cite this document
Harold S. Ashenhurst. “Process of and Apparatus for Forming Cellular Building Blocks (US Patent 1,608,690, 1926).” November 30, 1926. US Patent No. 1,608,690. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23476. https://asbestosclaims.law/library/23476.
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