Combination lock having a second lock mechanism
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United States of America Patent
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Mar 24, 2015
Grant Date -
N/A
app pub date -
Feb 4, 2010
filing date -
Oct 6, 2003
priority date (Note) -
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Abstract
A combination lock having a combination lock mechanism and a key lock mechanism. The combination lock mechanism is able to unlock and lock the combination lock by switching a plurality of dials exposed on the surface of the combination lock, while the key lock mechanism allows the user to unlock the combination lock with a key.
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