Device with one or more indicators
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Apr 21, 2005
app pub date -
Oct 15, 2003
filing date -
Oct 14, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A device that includes at least one consumable source that decreases in effectiveness over time. The device comprises a timer, operatively coupled to the consumable source, for maintaining the duration that the at least one consumable source is in use; and an effectiveness indicator, operatively coupled to the timer, for indicating when the timer has reached a preset duration. In an alternative embodiment, the device may include a sensor for sensing the effectiveness of the at least one consumable source.
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