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Ernst Schmidt and Eduard Dyckerhoff received US Patent No. 1,757,479 on May 6, 1930, filed February 25, 1928.
- Author
- Ernst Schmidt; Eduard Dyckerhoff
- Published by
- US Patent Office
- Series
- US Patent No. 1,757,479
- Date
- May 6, 1930
- Library no.
- ACL Doc 22642 · asbestosclaims.law/library/22642
- Rights
- US government work, in the public domain.
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Where it was listed
- Asbestos, June 1930, in its patents department (the year's issues)
Cite this document
Ernst Schmidt, Eduard Dyckerhoff. “Heat Insulation (US Patent 1,757,479, 1930).” May 6, 1930. US Patent No. 1,757,479. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22642. https://asbestosclaims.law/library/22642.
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