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Frederick L. Reynolds and Leon Markel received US Patent No. 2,133,115 on October 11, 1938, filed May 7, 1938. It was assigned to US Appliance Corp.
The patent's description opens (from the scanned text):
This invention relates generally to the construction of so-called chemical heating pads, particularly pads suitable for carrying out heating operations in permanent hair Waving.
- Author
- Frederick L. Reynolds; Leon Markel
- Published by
- US Patent Office
- Series
- US Patent No. 2,133,115
- Date
- October 11, 1938
- Library no.
- ACL Doc 22026 · asbestosclaims.law/library/22026
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 383 KB
Where it was listed
- Asbestos, January 1939, in its patents department (the year's issues)
Cite this document
Frederick L. Reynolds, Leon Markel. “Chemical Heating Pad (US Patent 2,133,115, 1938).” October 11, 1938. US Patent No. 2,133,115. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22026. https://asbestosclaims.law/library/22026.
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