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Harry E. Holcomb received US Patent No. 1,819,840 on August 18, 1931.
The patent's description opens (from the scanned text):
This invention relates broadly to a method and apparatus for producing composition' sheeting, and particularly to a method and .apparatus for the production of relatively heavy asbestos board, such as cement shingles and allied products.- The manufacture of composition sheeting, cement slabs or slabs made from cement and asbestos or other fibrous material has been carried out in the past by a process which is in some respects similar to methods of making paper. lIn one process of manufacture of cementitious slabs `heretofore employed and which involves handling the materials ...
- Author
- Harry E. Holcomb
- Published by
- US Patent Office
- Series
- US Patent No. 1,819,840
- Date
- August 18, 1931
- Library no.
- ACL Doc 22997 · asbestosclaims.law/library/22997
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 7 pages · 665 KB
Where it was listed
- Asbestos, October 1931, in its patents department (the year's issues)
Cite this document
Harry E. Holcomb. “Method and Apparatus for Making Fibre and Cement Shingles and Boards (US Patent 1,819,840, 1931).” August 18, 1931. US Patent No. 1,819,840. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22997. https://asbestosclaims.law/library/22997.
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