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Frederick R. Haselton
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Rockville, MD, US
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last 30 patents
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Patent Grant
Submarine well drilling and geological exploration station
Patent number
4,054,104
Issue date
Oct 18, 1977
Frederick R. Haselton
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Patent Grant
Semi-submersible vessels
Patent number
3,986,471
Issue date
Oct 19, 1976
Frederick R. Haselton
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Patent Grant
Water closet flushing device
Patent number
3,969,775
Issue date
Jul 20, 1976
Frederick R. Haselton
E03 - WATER SUPPLY SEWERAGE