DIGITAL DOOR LOCK DEVICE
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United States of America Patent
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Issued Date -
Jul 9, 2015
app pub date -
Aug 2, 2013
filing date -
Aug 2, 2012
priority date (Note) -
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Abstract
A digital door lock is disclosed. More particularly, a digital door lock is provided that digitally operates and can be easily installed on all kinds of doors with a door knob such as interior and exterior doors and chassis doors, without damaging existing doors with a mechanical door lock.
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