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Robert Illemann received US Patent No. 1,450,856 on April 3, 1923, filed June 3, 1920.
- Author
- Robert Illemann
- Published by
- US Patent Office
- Series
- US Patent No. 1,450,856
- Date
- April 3, 1923
- Library no.
- ACL Doc 23231 · asbestosclaims.law/library/23231
- Rights
- US government work, in the public domain.
Read or download
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Where it was listed
- Asbestos, May 1923, in its patents department (the year's issues)
Cite this document
Robert Illemann. “Non-Conducting Material (US Patent 1,450,856, 1923).” April 3, 1923. US Patent No. 1,450,856. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23231. https://asbestosclaims.law/library/23231.
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