Document intended for use with a device for verifying the authenticity of a document
ES340884A1
Improvements introduced in the manufacture of value papers, cedulas, checks, tickets and similar. (Machine-translation by Google Translate, not legally binding)
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Scrip for use with paper security validation apparatus
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Integrator circuit for security validation
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Paper security validation apparatus
GB1145508A
Payout drive assembly and circuit for coin change dispensing apparatus
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Radiation sensitive paper security validation apparatus
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Photoelectric document tester using light beams of complementary color
US3280953A
Payout drive assembly and circuit for coin change dispensing apparatus
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Nonmonetary vending token and verification apparatus
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Photoelectric document authenticating apparatus with age and color compensation
US3211267A
Non-monetary token vending apparatus
CA868532A
Scrip for use with paper security validation apparatus
