You don't need the product names or old records. No fee unless we recover compensation for your family.
David B. Pall and Cyril A. Keedwell received US Patent No. 3,238,056 on March 1, 1966, filed March 27, 1961.
The patent's description opens:
This invention relates to microporous materials and more particularly to nonwoven fibrous materials having ultrafine or micro pores and especially adapted for use as filter media, and to a process for preparing such materials.
- Author
- David B. Pall; Cyril A. Keedwell
- Published by
- US Patent Office
- Series
- US Patent No. 3,238,056
- Date
- March 1, 1966
- Library no.
- ACL Doc 23180 · asbestosclaims.law/library/23180
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 8 pages · 864 KB
Where it was listed
- Asbestos, April 1966, in its patents department (the year's issues)
Cite this document
David B. Pall, Cyril A. Keedwell. “Microporous materials and process of making the same (US Patent 3,238,056, 1966).” March 1, 1966. US Patent No. 3,238,056. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23180. https://asbestosclaims.law/library/23180.
ACL Doc numbers and their short links never change. See how to cite the Library.
Talk with an asbestos lawyer
Start with what you remember, and we'll take it from there.
This page is provided for general informational purposes and does not constitute legal advice. Every asbestos case turns on its own facts, exposure history, diagnosis, deadlines, available evidence, and applicable law. Reviewing this page does not create an attorney-client relationship. For advice about your specific situation, call 833-4-ASBESTOS for a free case review.