Communications: electrical – Continuously variable indicating – With meter reading
Patent
1995-06-07
1997-02-11
Zimmerman, Brian
Communications: electrical
Continuously variable indicating
With meter reading
379107, H04Q 100
Patent
active
056025360
ABSTRACT:
One or more lock or key units of a secure entry system is equipped with a radio receiver. The receiver permits a memory in the lock or key unit to be updated with new data that is modulated onto a radio frequency signal. By this technique, system-wide changes of programming data, such as changes of lockout lists and access codes, and changes targeted to specific units, such as disabling a particular key, can be implemented simply and quickly.
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Webster's New World Dictionary, Page 1108, definition of "radio frequency" No Date Available.
Marino, "Pager and Garage Door Opener Combination," Motorola Technical Developments, vol. 10, 3, 90.
Barrett Philip D.
Henderson Walter G.
Larson Wayne F.
Supra Products, Inc.
Zimmerman Brian
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