Method of making permanent facsimile copies
United States Patent 2859351
US Patent References:
Nonsmudging transfer sheet
- - 2188590

Shock absorbing shoe heel
- - 2669038

Heat-sensitive copying-paper
- - 2668126

Heat-sensitive copying-paper
- - 2710263


Inventors:
Clark, Bryce L.
Miller, Carl S.
Publication Date:
11/04/1958
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Assignee:
MINNESOTA MINING & MFG
Primary Class:
430/353
International Classes:
B41M5/36