David Bruce Marr

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Scottsdale, AZ, US

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Patents Applicationslast 30 patents

Information Patent Application
ATTENDANCE TRACKING MOBILE READER DEVICE AND SYSTEM
- Publication number 20160293025
- Publication date Oct 6, 2016
- Blackboard Inc.
- David MARR
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
JOINT CLOSED-LOOP AND OPEN-LOOP INSTRUMENT ISSUANCE FOR DISBURSING...
- Publication number 20120191598
- Publication date Jul 26, 2012
- Blackboard Inc.
- Pedro Jose Marzo
- G06 - COMPUTING CALCULATING COUNTING