Process of making pressure sensitive record material
United States Patent 2505471
US Patent References:
Pyro-recording paper
- - 1844199

Safety-paper
- - 2083206

Coating for paper
- - 2299693


Inventors:
Green, Barrett K.
Publication Date:
04/25/1950
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Assignee:
NCR CO
Primary Class:
427/151
Other Classes:
427/395, 106/220, 178/69A, 427/152
International Classes:
B01J13/02; B41M5/124; B41M5/132
Foreign References:
GB550332A