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Oliver W. Pfeifer and Richard F. Shannon received US Patent No. 3,216,881 on November 9, 1965, filed January 2, 1963.
The patent's description opens:
The present invention relates to low density, inorganic, insulating structures of improved strength and impact resistance, and particularly to structures of this type which comprise a continuous, hydrous calcium silicate matrix reinforced by fibrous glass strands.
- Author
- Oliver W. Pfeifer; Richard F. Shannon
- Published by
- US Patent Office
- Series
- US Patent No. 3,216,881
- Date
- November 9, 1965
- Library no.
- ACL Doc 23553 · asbestosclaims.law/library/23553
- Rights
- US government work, in the public domain.
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Where it was listed
- Barry Castleman, Asbestos: Medical and Legal Aspects (5th edition, 2005)
Cited by Barry Castleman
In Asbestos: Medical and Legal Aspects (5th edition, 2005), which cites it in:
- Chapter 6 (Alternatives to Asbestos Insulation), p. 379, note 58
Cited on this site
Cite this document
Oliver W. Pfeifer, Richard F. Shannon. “Reinforcement of lower density inorganic structures (US Patent 3,216,881, 1965).” November 9, 1965. US Patent No. 3,216,881. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23553. https://asbestosclaims.law/library/23553.
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