Patents Represented by Attorney Lock Purnell

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  • Security system
    Patent number: 5805064
    Abstract: A security system control system that arms a system independent of a particular sequence of key inputs. A security system control system with a pseudo alphanumeric display to display system status and to prompt the user to input data to effectuate a desired result.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: September 8, 1998
    Inventor: David Yorkey