George MacDonald

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Franklin, NH, US

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Patents Grantslast 30 patents

Information Patent Grant
Marine shaft seal with lip seal, bearing and gasket
- Patent number 6,866,271
- Issue date Mar 15, 2005
- Duramax Marine, LLC
- George MacDonald
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Adjustable seal for propeller drive shaft
- Patent number 6,039,320
- Issue date Mar 21, 2000
- Duramax Marine, LLC
- George MacDonald
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Adjustable seal for propeller drive shaft
- Patent number 5,639,098
- Issue date Jun 17, 1997
- Duramax, Inc.
- George MacDonald
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT

Patents Applicationslast 30 patents

Information Patent Application
Marine shaft seal with lip seal, bearing and gasket
- Publication number 20030173744
- Publication date Sep 18, 2003
- Duramax Marine, LLC
- George MacDonald
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...