1
Joseph F Rando, Jeffrey M Novak: Scanner with coupon validation. Spectra Physics, Thomas M Freiburger, July 7, 1992: US05128520 (129 worldwide citation)

A point of sale (POS) bar code scanner such as in common use in retail stores includes provision for reading bar coded redemption coupons (or other bar coded documents redeemable for value) in a manner secure from a human operator. Integration of functions between the POS scanner and the coupon read ...


2
Joseph F Rando, Jeffrey M Novak: Scanner with coupon validation. Spectra Physics Scanning Systems, Lyon & Lyon, May 8, 2001: USRE037166

A point of sale (POS) bar code scanner such as in common use in retail stores includes provision for reading bar coded redemption coupons (or other bar coded documents redeemable for value) in a manner secure from a human operator. Integration of functions between the POS scanner and the coupon read ...


3
Joseph F Rando, Jeffrey M Novak: Scanner with coupon validation. Spectra Physics Scanning Systems, Lyon & Lyon, December 12, 1995: USRE035117

A point of sale (POS) bar code scanner such as in common use in retail stores includes provision for reading bar coded redemption coupons (or other bar coded documents redeemable for value) in a manner secure from a human operator. Integration of functions between the POS scanner and the coupon read ...



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