Doug Bank

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Chicago, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Constant force shaft grounding brush holder
- Patent number 9,419,501
- Issue date Aug 16, 2016
- Phoenix Electric Mfg. Co.
- John Bank
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Constant force modular integrated internal brush holder
- Patent number 7,402,933
- Issue date Jul 22, 2008
- Phoenix Electric Mfg. Co.
- John Bank
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Constant force cartridge brush holder
- Patent number 6,731,042
- Issue date May 4, 2004
- Phoenix Electric Mfg. Co.
- John Bank
- H01 - BASIC ELECTRIC ELEMENTS