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William R. Blackmore
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Bloomington, MN, US
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Patents Grants
last 30 patents
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Patent Grant
Watercraft roll-on system
Patent number
6,883,454
Issue date
Apr 26, 2005
St. Croix Marine Products, Inc.
William R. Blackmore
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Patent Grant
Boating lift
Patent number
6,591,770
Issue date
Jul 15, 2003
St. Croix Marine Products, Inc.
William R. Blackmore
B66 - HOISTING LIFTING HAULING
Patents Applications
last 30 patents
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Patent Application
Watercraft roll-on system
Publication number
20040099198
Publication date
May 27, 2004
William R. Blackmore
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT