Security element structure for documents, devices for...

Details Security element structure for documents, devices for... Security element structure for documents, devices for...

2006-11-07

2006-11-07

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

Document pattern analysis or verification

Reexamination Certificate

active

07133124

ABSTRACT:
A structure of a security element for documents provided with a combination of differently reacting or responding security features and functional designs, including conductive, magnetic and diffractive ones, which render it difficult or impossible for counterfeiters to discover the functioning of the security element.

REFERENCES:
patent: 4303307 (1981-12-01), Tureck et al.
patent: 4560445 (1985-12-01), Hoover et al.
patent: 5818019 (1998-10-01), Irwin et al.

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