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|04-30-2013, 04:15 PM||#51 (permalink)|
I remember seeing a post on here where someone linked to the Matrix patent and the USPTO listed the patent as
"Patent Expired for Failure to Pay Maintenance Fees."
**EDIT found it**
Patent # is 5613483
Aplication # is 08555625
Enter the numbers and click bibliographic data
Not shure if this is the only Matrix patnet.
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