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. 02, 2007
Filed:
Jan. 05, 2001
Applicants:
Leonid Raiz, Newton, MA (US);
Irwin Jungreis, Sudbury, MA (US);
Inventors:
Leonid Raiz, Newton, MA (US);
Irwin Jungreis, Sudbury, MA (US);
Assignee:
Revit Technology Corporation, Waltham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method that includes (1) distributing authorization keys from a subscription server to computers on which copies of an application program are to be run, each of the authorization keys being associated with a validity period during which the authorization key will be valid, and (2) at intermittent times that may be as infrequent as the times when the validity periods end, distributing new authorization keys to each of the computers, the keys being distributed electronically in a manner that is transparent to users of the computers.