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Robert W. Hoffman and Otto F. Juenger received US Patent No. 2,170,409 on August 22, 1939, filed June 1, 1936. It was assigned to Johns Manville.
The patent's description opens (from the scanned text):
This invention relates to double-walled stove thereof is thermal insulating material I4 in the ovens or the like. y form of self-sustaining slabs or blocks.
- Author
- Robert W. Hoffman; Otto F. Juenger
- Published by
- US Patent Office
- Series
- US Patent No. 2,170,409
- Date
- August 22, 1939
- Library no.
- ACL Doc 23258 · asbestosclaims.law/library/23258
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 333 KB
Where it was listed
- Asbestos, November 1939, in its patents department (the year's issues)
Cite this document
Robert W. Hoffman, Otto F. Juenger. “Oven (US Patent 2,170,409, 1939).” August 22, 1939. US Patent No. 2,170,409. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23258. https://asbestosclaims.law/library/23258.
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