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Henry Joseph Palumbo received US Patent No. 3,694,304 on September 26, 1972, filed April 5, 1971. It was assigned to Johns Manville.
The patent's abstract:
COMPRESSED ASBESTOS SHEET PACKINGS HAVING THE LOW DENSITY AND COMPRESSIBILITY CHARACTERISTICS OF BEATER SHEET PACKING (ASTM D-1170) BUT WITH SUPERIOR TENSILE STRENGTH AND REDUCED POROSITY CAN BE PRODUCED BY COMBINING 3-25% HYDRATED CALCIUM SILICATE OF LOW BULK DENSITY WITH 50-75% ASBESTOS FIBERS, 13-35% RUBBER BINDER, 10-50% DIATOMACEOUS EARTH TYPE FILLER AND 215% RUBBER COMPOUNDING INGREDIENTS AND FORMING SHEETS THEREFROM BY A PRESSURE ROLLING OF THE MIXTURE.
- Author
- Henry Joseph Palumbo
- Published by
- US Patent Office
- Series
- US Patent No. 3,694,304
- Date
- September 26, 1972
- Library no.
- ACL Doc 22130 · asbestosclaims.law/library/22130
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 581 KB
Where it was listed
- Asbestos, March 1973, in its patents department (the year's issues)
Cited on this site
Cite this document
Henry Joseph Palumbo. “Compressed asbestos sheet packing products and method (US Patent 3,694,304, 1972).” September 26, 1972. US Patent No. 3,694,304. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22130. https://asbestosclaims.law/library/22130.
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