Donald C. Sorenson

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Lynden, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Systems and methods for integrating telephone and security devices
- Patent number 5,799,062
- Issue date Aug 25, 1998
- Allsop, Inc.
- Sal Lazzara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and methods for generating uninterruptible AC power signals
- Patent number 5,642,002
- Issue date Jun 24, 1997
- Alpha Technologies
- Fereydoun Mekanik
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Apparatus and methods for generating uninterruptible AC power signals
- Patent number 5,638,244
- Issue date Jun 10, 1997
- Alpha Technologies, Inc.
- Fereydoun Mekanik
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER