David M. Baum

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Alexandria, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Distributed multi-outlet paging
- Patent number 5,543,785
- Issue date Aug 6, 1996
- Motorola, Inc.
- Gregory B. Vatt
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication network with flexible handoff scheduling for mobile n...
- Patent number 5,537,679
- Issue date Jul 16, 1996
- Motorola, Inc.
- Jeffrey S. Crosbie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of selecting the most cost effective cellular service plan p...
- Patent number 5,027,388
- Issue date Jun 25, 1991
- Motorola, Inc.
- Andrea E. Bradshaw
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method of processing cellular telephone call detail data for billin...
- Patent number 4,979,207
- Issue date Dec 18, 1990
- Motorola, Inc.
- David M. Baum
- G06 - COMPUTING CALCULATING COUNTING