Martin K. Schroeder

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San Diego, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
System for protecting AMPS data using CDPD channel
- Patent number 6,876,863
- Issue date Apr 5, 2005
- Cirrus Logic, Inc.
- Martin K. Schroeder
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Portable radio telephone data terminal using cdpd
- Patent number 6,463,271
- Issue date Oct 8, 2002
- Cirrus Logic, Inc.
- Martin K. Schroeder
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
User interface with improved data entry features for telephone system
- Patent number 6,405,060
- Issue date Jun 11, 2002
- Cirrus Logic, Inc.
- Martin K. Schroeder
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Signaling the type of incoming telephone calls
- Patent number 6,032,053
- Issue date Feb 29, 2000
- Pacific Communications Science, Inc.
- Martin K. Schroeder
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
User interface for cellular telephone
- Patent number 5,797,098
- Issue date Aug 18, 1998
- Pacific Communication Sciences, Inc.
- Martin K. Schroeder
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Connection of subscriber communication network base station to exte...
- Patent number 4,779,262
- Issue date Oct 18, 1988
- International Mobile Machines Corp.
- Graham M. Avis
- H04 - ELECTRIC COMMUNICATION TECHNIQUE