Earl A. Clark

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Norfolk, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Elastomeric sealing device
- Patent number 4,838,732
- Issue date Jun 13, 1989
- Stephen E. Clark
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Float controlled separator valve
- Patent number 4,580,592
- Issue date Apr 8, 1986
- Stephen E. Clark
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Stirling cycle engine and fluid pump
- Patent number 4,353,683
- Issue date Oct 12, 1982
- Earl A. Clark
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Heat engine with variable volume displacement means
- Patent number 4,312,181
- Issue date Jan 26, 1982
- Earl A. Clark
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Automatic separator valve
- Patent number 4,132,238
- Issue date Jan 2, 1979
- Earl A. Clark
- E03 - WATER SUPPLY SEWERAGE