Printed matter – Cryptographic record template
Patent
1978-09-18
1980-12-23
Bell, Paul A.
Printed matter
Cryptographic record template
40333, 283 6, 283 8A, 283 23, B42D 1500
Patent
active
042406498
ABSTRACT:
A vehicle parking ticket is provided comprising month, day and hour indicia on the face of the card, along with three-layered laminated sections adjacent to the indicia. Use of the cards entails the irreversible destruction of the upper two layers of laminate causing exposure of a readily indentifiable lower layer, thereby preventing counterfeiting and reuse of the ticket.
REFERENCES:
patent: 513151 (1894-01-01), Shattuc
patent: 2839854 (1958-06-01), Martinet
patent: 2961777 (1960-11-01), Neville et al.
patent: 3528186 (1970-09-01), Roda
patent: 3966232 (1976-06-01), Doriel
patent: 4095824 (1978-06-01), Bachman
Oxydal Advertisement, May, 1965.
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