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Hans Holmar De Geer received US Patent No. 3,300,322 on January 24, 1967, filed October 23, 1963. It was assigned to Sandvikens Jernverks AB.
The patent's description opens:
The present invention relates to hot tops for ingot casting molds for the casting of steel and other metals.
- Author
- Hans Holmar De Geer
- Published by
- US Patent Office
- Series
- US Patent No. 3,300,322
- Date
- January 24, 1967
- Library no.
- ACL Doc 22703 · asbestosclaims.law/library/22703
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 2 pages · 258 KB
Where it was listed
- Asbestos, March 1967, in its patents department (the year's issues)
Cite this document
Hans Holmar De Geer. “Hot Top (US Patent 3,300,322, 1967).” January 24, 1967. US Patent No. 3,300,322. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22703. https://asbestosclaims.law/library/22703.
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