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Inventor
SENEVIRATNE PADMASIRI D
3 patents
Patents
3 patents
US4320915A
Mar 23, 1982
Internal elevator
VARCO INT
157 citations
92
US4367056A
Jan 4, 1983
Marine platform jacket jack
VARCO INT
24 citations
78
US4423645A
Jan 3, 1984
Pipe spinner
VARCO INT
8 citations
67