Richmond, Texas
United States
6
2013-06-25
The entities that hold a legal rights for patent applications filed by inventor Walker David A.:
David A. Walker from Richmond, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Systems and methods for verifying authorization
#2 | 2010-08-03Systems and methods for verifying authorization for electronic commerce
#3 | 2007-07-05Systems and methods for determining a need for authorization
#4 | 2007-03-20Systems and methods for determining a need for authorization
#5 | 2005-12-15Systems and methods for determining an authorization
#6 | 2005-08-30Systems and methods for determining an authorization threshold
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