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Brodersen Harry Theodore received US Patent No. 1,980,905 on November 13, 1934, filed May 13, 1930.
The patent's description opens (from the scanned text):
This invention relates to a method of coloring sheet materials, made of calcareous materials, such as cement bonded asbestos and the like, an to the resulting product.
- Author
- Brodersen Harry Theodore
- Published by
- US Patent Office
- Series
- US Patent No. 1,980,905
- Date
- November 13, 1934
- Library no.
- ACL Doc 23047 · asbestosclaims.law/library/23047
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 353 KB
Where it was listed
- Asbestos, January 1935, in its patents department (the year's issues)
Cite this document
Brodersen Harry Theodore. “Method of Coloring Materials (US Patent 1,980,905, 1934).” November 13, 1934. US Patent No. 1,980,905. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23047. https://asbestosclaims.law/library/23047.
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