Title:
METHOD AND APPARATUS FOR VALIDATING DOCUMENTS BY SPECTRAL ANALYSIS OF LIGHT REFLECTED THEREFROM
United States Patent 3480785
US Patent References:
Test means for paper and currency
- - 3122227
Method and apparatus for discriminating between desired and undesired documents
- - 3220549
/RE26176.html
- - RE26176
Optical detection and comparison apparatus for currency changing machine
- - 3356992
Test means for paper and currency
- - 3122227
Method and apparatus for discriminating between desired and undesired documents
- - 3220549
/RE26176.html
- - RE26176
Optical detection and comparison apparatus for currency changing machine
- - 3356992
Inventors:
Aufderheide, Don R.
Publication Date:
11/25/1969
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Export Citation:
Assignee:
VENDIT INC
Primary Class:
Other Classes:
250/214R, 194/207, 209/534, 382/135, 340/5.860
International Classes:
G01J3/46; G07D7/00; G01N21/30