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Thomas S. Curtis received US Patent No. 1,690,771 on November 6, 1928, filed April 7, 1925.
The patent's description opens (from the scanned text):
This invention relates to the/.production of magnesia in the formi of periclase and the chief objectof the invention is to produce such form of magnesia of an especially high degree of purit-y land having novel and advantageous properties resulting from s uch puity and from the method by vvhlch 1t 1s ma e.
- Author
- Thomas S. Curtis
- Published by
- US Patent Office
- Series
- US Patent No. 1,690,771
- Date
- November 6, 1928
- Library no.
- ACL Doc 22930 · asbestosclaims.law/library/22930
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 8 pages · 912 KB
Where it was listed
- Asbestos, January 1929, in its patents department (the year's issues)
Cite this document
Thomas S. Curtis. “Magnesia Product (US Patent 1,690,771, 1928).” November 6, 1928. US Patent No. 1,690,771. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22930. https://asbestosclaims.law/library/22930.
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