Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1998-08-13
1999-11-02
Wu, Daniel J.
Communications: electrical
Condition responsive indicating system
Specific condition
340568, 340539, 70 69, 70277, G08B 1314
Patent
active
059778768
ABSTRACT:
A security briefcase is provided including an upper half and a lower half hingably coupled. Also included is a locking mechanism for unlocking the upper half and the lower half upon the receipt of an activation signal via free space. A portable unit is provided for transmitting the activation signal via free space upon the depression of a button.
REFERENCES:
patent: 4117468 (1978-09-01), Vasquez
patent: 4204202 (1980-05-01), Pai
patent: 4591835 (1986-05-01), Sharp
patent: 4804943 (1989-02-01), Soleimani
patent: 5043702 (1991-08-01), Kuo
patent: 5126719 (1992-06-01), DeSorbo
patent: 5507161 (1996-04-01), Broekaert et al.
Huang Sihong
Wu Daniel J.
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