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:
Dec. 31, 1991
Filed:
Jun. 26, 1989
Applicant:
Inventor:
Dana J Salihi, Fort Worth, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04L / ; H04L / ;
U.S. Cl.
CPC ...
380 23 ; 380 29 ; 380 48 ; 380 49 ; 380-2 ;
Abstract
Each subscriber unit (108) operating on a communication system (100) selects either encrypted or unencrypted transmission mode as a current transmission mode. Before participating in a communication, each subscriber unit (108) receives a message identifying an authorized transmission mode. Only when the current transmission mode corresponds to the authorized transition mode may each subscriber unit (108) transmit so as to participate in the communication.
Salihi, Dana. (1991). Method and apparatus for preventing unauthorized transmissions (U.S. Patent No. 5077791). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5077791
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile