Donald W. Wortman

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Broken Arrow, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Subscriber line interface circuit providing regulated current
- Patent number 5,138,658
- Issue date Aug 11, 1992
- Seiscor Technologies Inc.
- Dan K. Carter
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Sealed lead-acid battery float charger and power supply
- Patent number 4,663,580
- Issue date May 5, 1987
- Seiscor Technologies, Inc.
- Donald W. Wortman
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER