CONTAINER FOR VOLATILE SUBSTANCES
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United States of America Patent
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Issued Date -
Jul 22, 2010
app pub date -
Jun 27, 2008
filing date -
Jun 29, 2007
priority date (Note) -
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Abstract
The invention refers to a container (1) for volatile substances having a first chamber (2) containing a porous material (4) impregnated with a first volatile substance, and a second chamber (3) containing a second volatile substance. The evaporation of the first and the second volatile substances is synchronized so that both volatile substances are finished substantially at the same time. The second volatile substance is used as a visual indication of the end of life of the first substance. The open base of the first and the second chamber are covered by a permeable film. The container may be arranged with a heater for the volatile substances.
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