David H. Douglas

Follow

Person

Darien, CT, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for selecting a supplemental product to offer...
- Patent number 8,533,003
- Issue date Sep 10, 2013
- Walker Digital, LLC
- Raymond J. Mueller
- G07 - CHECKING-DEVICES
Information Patent Grant
Method and apparatus for selecting a supplemental product to offer...
- Patent number 8,103,520
- Issue date Jan 24, 2012
- Walker Digital, LLC
- Raymond J. Mueller
- G07 - CHECKING-DEVICES
Information Patent Grant
Method and apparatus for selecting a supplemental product to offer...
- Patent number 7,542,919
- Issue date Jun 2, 2009
- Walker Digital, LLC
- Raymond J. Mueller
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR SELECTING A SUPPLEMENTAL PRODUCT TO OFFER...
- Publication number 20140089085
- Publication date Mar 27, 2014
- WALKER DIGITAL HOLDINGS, LLC
- Raymond J. Mueller
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD AND APPARATUS FOR SELECTING A SUPPLEMENTAL PRODUCT TO OFFER...
- Publication number 20130339182
- Publication date Dec 19, 2013
- Walker Digital, LLC
- Raymond J. Mueller
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD AND APPARATUS FOR SELECTING A SUPPLEMENTAL PRODUCT TO OFFER...
- Publication number 20120123864
- Publication date May 17, 2012
- Walker Digital, LLC
- Raymond J. Mueller
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD AND APPARATUS FOR SELECTING A SUPPLEMENTAL PRODUCT TO OFFER...
- Publication number 20090138365
- Publication date May 28, 2009
- Raymond J. Mueller
- G06 - COMPUTING CALCULATING COUNTING