John D. Gill

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Annapolis, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Elastomeric energy recovery system
- Patent number 4,479,356
- Issue date Oct 30, 1984
- Elastomer Energy Recovery, Inc.
- John D. Gill
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Contra-rotating propeller drive system
- Patent number 3,938,464
- Issue date Feb 17, 1976
- John D. Gill
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT