Floyed Jeffries Duncan, Jr.

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West Linn, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Helical device for conversion of fluid potential energy to mechanic...
- Patent number 7,044,711
- Issue date May 16, 2006
- Floyed Jeffries Duncan, Jr.
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...