RADIATION SENSITIVE PAPER SECURITY VALIDATION APPARATUS
United States Patent 3457421
US Patent References:
Apparatus for identifying paper money, or the like, as genuine, and for making change or the like
- - 2950799
Device for identification of engraved documents
- - 2964641
Document verifier
- - 3031076
Detection of stamps on documents
- - 3090870
Radiation compensation for light sources in spectrometric apparatus
- - 3245305
Apparatus for identifying paper money, or the like, as genuine, and for making change or the like
- - 2950799
Device for identification of engraved documents
- - 2964641
Document verifier
- - 3031076
Detection of stamps on documents
- - 3090870
Radiation compensation for light sources in spectrometric apparatus
- - 3245305
Inventors:
Bayha, Jack E.
Publication Date:
07/22/1969
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Export Citation:
Assignee:
TRANSMARINE CORP
Primary Class:
Other Classes:
356/71, 356/239.100
International Classes:
G07D7/00; H01J39/12; G01N21/30; G01N21/32
US Patent References:
| 3360653 | Photoelectric document authenticating apparatus with age and color compensation |