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:
Mar. 10, 1987
Filed:
Apr. 30, 1982
Applicant:
Inventor:
Walter E Schmidt, New York, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364900 ;
Abstract
Methods and apparatus for the protection and control of computer programs wherein a valid program is modified to provide a furnished program and a corresponding restoration program, one or both of these are modified in accordance with confirmation data, and the furnished program, confirmation data, and restoration program data are supplied to an equipped computer installation in the form of a furnished program medium, a confirmation unit, and a restoration unit, via separate commercial channels.