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Richard V. Mattison received US Patent No. 1,623,631 on April 5, 1927, filed March 6, 1926.
- Author
- Richard V. Mattison
- Published by
- US Patent Office
- Series
- US Patent No. 1,623,631
- Date
- April 5, 1927
- Library no.
- ACL Doc 23000 · asbestosclaims.law/library/23000
- Rights
- US government work, in the public domain.
Read or download
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Where it was listed
- Asbestos, June 1927, in its patents department (the year's issues)
Cite this document
Richard V. Mattison. “Method and Apparatus for Producing Plastic Materials (US Patent 1,623,631, 1927).” April 5, 1927. US Patent No. 1,623,631. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23000. https://asbestosclaims.law/library/23000.
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