Frank C. Praner

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Fairhope, AL, US

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Patents Grantslast 30 patents

Information Patent Grant
Rotary displacement turbine engine with vacuum relief valve means
- Patent number 4,417,859
- Issue date Nov 29, 1983
- Frank C. Praner
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS