Security document

Details Security document Security document

1987-06-29

1989-12-26

Bell, Paul A.

Printed matter

Having revealable concealed information, fraud preventer or...

Utilizing electromagnetic radiation

283 83, 283 77, 283904, B42D 1500

Patent

active

048893668

ABSTRACT:
A security document comprising a flat support; one or more portions having identification codes; and a hologram; which hologram presents reference means along the edge, and a protective coating for preventing the hologram from being removed or damaged.

REFERENCES:
patent: 573524 (1896-12-01), McMasters
patent: 4096015 (1978-06-01), Kawamata et al.
patent: 4126373 (1978-11-01), Moraw
patent: 4171864 (1979-10-01), Jung et al.
patent: 4269473 (1981-05-01), Flothmann et al.
patent: 4304809 (1981-12-01), Moraw et al.
patent: 4531765 (1985-07-01), Shulman
"Sandwich Holography for Sharing Information Interferometrically With a High Degree of Security", Applied Optics, Abramson et al, 15 Jun. 1979, vol. 18, No. 12, pp. 2017-2021.

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