Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1988-02-01
1989-08-01
Swann, III, Glen R.
Communications: electrical
Condition responsive indicating system
Specific condition
340326, G08B 2300
Patent
active
048536784
ABSTRACT:
An advertising device for use in retail outlets, including a passive infra-red sensing system, a sign bearing a message, and signalling means by which the attention of persons in the vicinity can be attracted, wherein the presence of persons in the vicinity may be detected by the sensing means and said signalling means may be activated to attract attention to the sign.
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Bishop, Jr. Chester O.
Dennis Malcolm I.
Richardson Christopher C.
Riley Peter S.
Shaw Vincent P.
Mullen Jr. Thomas J.
Swann III Glen R.
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