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Heat Insulation Material (US Patent 2,214,904, 1940)

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Albert S. Johnson received US Patent No. 2,214,904 on September 17, 1940, filed March 21, 1938.

The patent's description opens (from the scanned text):

My invention pertains to heat-insulating compounds or mixtures and it relates more particularly, but not exclusively, to insulating mix tures of a plastic character designed and adapted to be used in connection with boilers or the like to retain the heat therein, resulting in marked improvement in the economy of operation of the boilers or heaters with which it is used to cover the brick-work, concrete, or its equivalent externally.

Author
Albert S. Johnson
Published by
US Patent Office
Series
US Patent No. 2,214,904
Date
September 17, 1940
Library no.
ACL Doc 22653 · asbestosclaims.law/library/22653
Rights
US government work, in the public domain.

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Where it was listed

Cite this document

Albert S. Johnson. “Heat Insulation Material (US Patent 2,214,904, 1940).” September 17, 1940. US Patent No. 2,214,904. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22653. https://asbestosclaims.law/library/22653.

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