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Patent expiration date with multiple publications
I was wondering what a patents Priority date is? If its set to 1997 and it has been published 6 times (the last publish was 2012) when does it expire? The patent I am talking about is US20120221930.
Nov 26 '12 at 22:37
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Aug 30, 2012
Apr 4, 2012
Sep 13, 1996
Julien Tan Nguyen
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