Title:
CARD-LIKE OBJECT WITH INVISIBLE INDICIA AND APPARATUS FOR DETECTING AND DISPLAYING SAME
United States Patent 3466775
US Patent References:
Record card controlled machine
- - 2294751

Data processing
- - 3045529

Data processing
- - 3096882

Credential
- - 3279826


Inventors:
Smith, Melville H.
Publication Date:
09/16/1969
View Patent Images:
Assignee:
Melville, Smith H.
Primary Class:
Other Classes:
235/475, 235/492, 235/484, 40/476, 273/139, 235/441, 283/901, 283/89, 250/271
International Classes:
A63F3/06; G07C15/00; G09F11/14




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