Communications: electrical – Continuously variable indicating – With meter reading
Patent
1986-02-21
1988-02-23
Ng, Jin F.
Communications: electrical
Continuously variable indicating
With meter reading
70 63, 235382, 379103, E05B 4900
Patent
active
047273682
ABSTRACT:
Real estate lockbox and key designs are disclosed which provide a variety of operational features. Also disclosed is a comprehensive system that allows real estate boards and agencies to efficiently manage their lockbox operations. Features provided by the system include the ability to record all accesses to all lockboxes; transfer all or part of such records from the lockboxes to the real estate agency or board; organize and review such records at the agency or board offices; disable operation of various lockboxes during certain hours of the day; facilitate operation of lockboxes that are mounted in awkward or poorly lit locations; limit lockbox accesses to preselected agents, agencies or boards; and record diagnostic information with each operation of a lockbox or key.
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Supra Products, Inc. brochure "Agent Key for the EAC-1000 Key Safe System," 1982.
Supra Products, Inc.; brochure, "A New Dimension in Key Box Systems, by Spura, The EAC-1000 Key Safe System," 1982.
Supra Products, Inc. brochure "EAC-1000, Documented Electronic Access Control System From Supra.," Sep. 1983.
Henderson Walter G.
Larson Wayne F.
Ham Mark E.
Ng Jin F.
Supra Products, Inc.
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