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Pete E. Marenholtz received US Patent No. 2,517,330 on August 1, 1950, filed September 7, 1949. It was assigned to Johns Manville.
The patent's description opens (from the scanned text):
This invention relates to a method and apparatus for continually'measuring the thickness of a sheet of paper or other material which is semi-opaque to visible light and of substantially homogeneous composition.
- Author
- Pete E. Marenholtz
- Published by
- US Patent Office
- Series
- US Patent No. 2,517,330
- Date
- August 1, 1950
- Library no.
- ACL Doc 21712 · asbestosclaims.law/library/21712
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 5 pages · 501 KB
Where it was listed
- Asbestos, September 1950, in its patents department (the year's issues)
Cite this document
Pete E. Marenholtz. “Apparatus for measuring the thickness of semiopaque material (US Patent 2,517,330, 1950).” August 1, 1950. US Patent No. 2,517,330. US Patent Office. AsbestosClaims.Law Library, ACL Doc 21712. https://asbestosclaims.law/library/21712.
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