Method of sorting mail using a coded postage stamp

Details Method of sorting mail using a coded postage stamp Method of sorting mail using a coded postage stamp

1975-06-17

1976-12-07

Knowles, Allen N.

Classifying, separating, and assorting solids

Electrostatic

209DIG1, 235 6112N, 250557, 283 22, 428 29, 428199, B07C 534

Patent

active

039957411

ABSTRACT:
Postage stamps selected in accordance with destination, are cancelled on mail by activating radiation which also establishes a destination code that is machine readable. The destination code is formed by a pattern of color zones on the cancelled postage stamp, the color of said zones being changed by the activating radiation.

REFERENCES:
patent: 3652830 (1972-03-01), Kessler
patent: 3757942 (1973-09-01), Gunn
patent: 3793600 (1974-02-01), Grosbard

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