David J. Levenson

Follow

Person

Pittsburgh, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Adjustable ergonomic keyboard for use with stationary palm and elem...
- Patent number 7,324,019
- Issue date Jan 29, 2008
- David J. Levenson
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Adjustable ergonomic keyboard for use with stationary palm and elem...
- Publication number 20030011503
- Publication date Jan 16, 2003
- David J. Levenson
- G06 - COMPUTING CALCULATING COUNTING