Electric alarm clock with battery back-up
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United States of America Patent
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Aug 16, 1994
Grant Date -
N/A
app pub date -
Jun 3, 1992
filing date -
Jun 3, 1992
priority date (Note) -
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Abstract
An electric alarm clock is disclosed which operates from a conventional external AC power source but is able to continue timekeeping in the event power from the external source is interrupted. A dial illumination feature is also operable during a power failure.
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Family
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Cited Art Landscape
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