Charles W. Pratt

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Estes Park, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Horizontal windmill with folding blades
- Patent number 5,570,997
- Issue date Nov 5, 1996
- Charles W. Pratt
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...