Security device for sheet material and method of marking the dev

Details Security device for sheet material and method of marking the dev Security device for sheet material and method of marking the dev

1984-05-10

1986-04-15

Bell, Paul A.

Printed matter

Method

Identifying

283 57, B42D 1500

Patent

active

045823456

ABSTRACT:
A method of indicating the face value of a commercial document such as a bank draft or a check while simultaneously precluding subsequent alteration thereof.

REFERENCES:
patent: 852257 (1907-04-01), Collier
patent: 1344235 (1920-06-01), Kopecky
patent: 1465099 (1923-08-01), Stolberg
patent: 1567613 (1925-12-01), Patton, Jr.
patent: 4358852 (1982-11-01), Ichikawa et al.

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