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:
Jun. 30, 1987
Filed:
Feb. 04, 1985
Applicant:
Inventors:
Howard W Selby, III, Boulder, CO (US);
Michael W Fellinger, Boulder, CO (US);
Assignee:
Selsys Corporation, Boulder, CO (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 33 ; 369 47 ; 369 52 ; 360 721 ; 358342 ; 235462 ; 434315 ;
Abstract
Access to a complete data base stored on optical disk media is limited to portions of the data base to which individual users are entitled by provision of an additional code on the optical disk, indicating the portions of the data base which the customers may access. The disk reader comprises an additional reader for reading the additional code and means for preventing access to other portions of the data base. The additional code may be conventional bar code.