Hydraulic and earth engineering – Marine structure or fabrication thereof
Patent
1987-08-27
1989-12-12
Corbin, David H.
Hydraulic and earth engineering
Marine structure or fabrication thereof
114264, 166355, 175 5, E21B 712, E21B 1909
Patent
active
048863971
ABSTRACT:
A dynamic load compensation system for supporting a crown block comprises:
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Corbin David H.
Haefliger William W.
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