Electric resistance heating devices – Heating devices – Vaporizer
Reexamination Certificate
2007-01-16
2007-01-16
Campbell, Thor S. (Department: 3742)
Electric resistance heating devices
Heating devices
Vaporizer
C392S394000
Reexamination Certificate
active
11162519
ABSTRACT:
Vapor-emitting devices according to various embodiments of the invention include active end of use indicators to warn users that it is nearing the time and/or time to replace the vapor-emitting device or a refill for the device. Some embodiments of the vapor-emitting devices include intrusive actuation of the end of use indicator, while other embodiments include non-intrusive actuation of the end of use indicator. The indicators may be visual and/or auditory cues for notifying users it is nearing the time and/or time to replace the vapor-emitting device or a refill for the device.
REFERENCES:
patent: 3780260 (1973-12-01), Elsner
patent: 5546926 (1996-08-01), Lake
patent: 5647052 (1997-07-01), Patel et al.
patent: 6368564 (2002-04-01), Smith
patent: 2004/0005146 (2004-01-01), Wefler
Bankers Jeffrey
Hafer Kevin
Kaiser Perry
Campbell Thor S.
Snell & Wilmer LLP
The Dial Corporation
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