Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1998-02-17
1999-09-07
Lee, Benjamin C.
Communications: electrical
Condition responsive indicating system
Specific condition
3405681, 34030915, 340527, 340523, 340540, 340528, 340457, 340635, 340679, G08B 1314
Patent
active
059493330
ABSTRACT:
A compact operation sensitive reminder device that is readily attachable to almost any movable item and that emits an alert signal (e.g., audio, visible or tactile) when the item is initially changed from an non-operative condition to an operative condition and then remains silent during the item's operation, and emits the alert signal again only after a certain amount of time that the item has remained non-operative.
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Lehmann Roger W.
Satten Michael I.
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