Sales records

Details Sales records Sales records

1989-12-07

1990-09-18

Watts, Douglas D.

Printed matter

Having revealable concealed information, fraud preventer or...

Utilizing electromagnetic radiation

283 67, B42D 1500

Patent

active

049573128

ABSTRACT:
Sales records comprising alphanumeric characters that are resistant to counterfeiting can be made by printing different parts of at least some of the characters making up the record in a plurality of colors.

REFERENCES:
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patent: 4797016 (1989-01-01), Lahr
Digital Color Printer: IBM Technical Disclosure Bulletin: vol. 21, No. 5, Oct. 1978, Skinner and Shaeffer.
Multicolor Printing: IBM Technical Disclosure Bulletin: vol. 22, No. 7, Dec. 1979, Baker and Dunn.

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