Tamper evident optically variable device and article utilizing t

Details Tamper evident optically variable device and article utilizing t Tamper evident optically variable device and article utilizing t

1986-08-07

1988-01-26

Norton, Donald F.

Bottles and jars

Closures

Including visual indicia

206459, 206807, 229102, 350166, B65D 5502

Patent

active

047212179

ABSTRACT:
Tamper evident optically variable device comprising an optically variable device having at least first and second layers with a spacer layer therebetween providing a color shift with change in viewing angle. A release layer is disposed between the first and second layers to permit the first and second layers to be separated from each other and to thereby destroy the optical shifting properties of the optically variable device.

REFERENCES:
patent: 3858977 (1975-01-01), Baird et al.
patent: 4475661 (1984-10-01), Griffin
patent: 4480749 (1984-11-01), Lavcis et al.
patent: 4502605 (1985-03-01), Wloszczyna

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