John E. Kopala

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Elgin, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Plastic battery container having reduced end wall deflection
- Patent number 6,183,903
- Issue date Feb 6, 2001
- GNB Technologies, Inc.
- Kris Campbell
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Detachable battery handle assembly
- Patent number 6,117,588
- Issue date Sep 12, 2000
- GNB Technologies, Inc.
- Kris Campbell
- H01 - BASIC ELECTRIC ELEMENTS