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John Olof Edstrom and Hans Holmar De Geer received US Patent No. 3,297,296 on January 10, 1967, filed January 3, 1966. It was assigned to Sandvikens Jernverks AB.
The patent's description opens:
The present invention relates to hot tops for casting molds for casting steel or other metals and especially to hot tops for ingot molds, said hot tops having high head insulation ability and low heat capacity and each forming a relatively thin insulating layer between the cast metal and an outer supporting structure.
- Author
- John Olof Edstrom; Hans Holmar De Geer
- Published by
- US Patent Office
- Series
- US Patent No. 3,297,296
- Date
- January 10, 1967
- Library no.
- ACL Doc 22704 · asbestosclaims.law/library/22704
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 2 pages · 285 KB
Where it was listed
- Asbestos, March 1967, in its patents department (the year's issues)
Cite this document
John Olof Edstrom, Hans Holmar De Geer. “Hot top composition for casting molds (US Patent 3,297,296, 1967).” January 10, 1967. US Patent No. 3,297,296. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22704. https://asbestosclaims.law/library/22704.
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