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William P. Hahn and Jr John O. Collins received US Patent No. 3,128,503 on April 14, 1964, filed April 21, 1961. It was assigned to Johns Manville.
The patent's description opens:
This invention relates to apparatus for molding pipe insulation, being particularly applicable to the molding of flat, pliable, fibrous felts or sheets of raw or unbaked mineral wool or other forms of fibrous material such as fiber glass and the like into semi-cylindrical pipe insulation sections.
- Author
- William P. Hahn; Jr John O. Collins
- Published by
- US Patent Office
- Series
- US Patent No. 3,128,503
- Date
- April 14, 1964
- Library no.
- ACL Doc 21714 · asbestosclaims.law/library/21714
- 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. 381, note 79
Cited on this site
Cite this document
William P. Hahn, Jr John O. Collins. “Apparatus for molding pipe insulation (US Patent 3,128,503, 1964).” April 14, 1964. US Patent No. 3,128,503. US Patent Office. AsbestosClaims.Law Library, ACL Doc 21714. https://asbestosclaims.law/library/21714.
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