The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 23, 1979
Filed:
Feb. 22, 1977
Applicant:
Inventor:
Hartwig Ruell, Furstenfeldbruck, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Primary Examiner:
Int. Cl.
CPC ...
G06K / ; G06K / ; G03H / ; G09F / ;
U.S. Cl.
CPC ...
235487 ; 235457 ; 350-361 ; 40-22 ; 283-7 ;
Abstract
An identification card with a holographic security safeguard in the form of a large area Lippmann-Bragg hologram recorded on a layer or sheet-like carrier disposed on a face of the identification card, capable of being read out without the use of laser light, employing merely normal light sources which produce incoherent light, whereby an image can be observed with the naked eye, and which can contain both binary and analog information, comparable, for example, with printed and other information contained on the identification card; and a method of producing such a card.