Printed matter – Cryptographic record template
Patent
1978-10-06
1980-12-30
Bell, Paul A.
Printed matter
Cryptographic record template
40333, 283 8A, 283 23, 283 6, B42D 1500
Patent
active
042419433
ABSTRACT:
A parking card having month, day and expiration time indicia and adapted to be hung securely in a car window. Each of said indicia being coated with a friable removable coating of a different color from the underlying section. Each of said friable removable coatings being overprinted with indicia corresponding to the indicia of the underprinted sections. The friable removable coating over the expiration times being overprinted with starting times earlier than said expiration times.
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.
Bell Paul A.
Parking Control Systems
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