Invention Grant
US07644784B1 Transport watercraft 失效
运输船只

Transport watercraft
Abstract:
A transport floor connected to the transport watercraft. An elevated drilling floor integrally connected to the transport floor; supporting a derrick comprising at least two rails for supporting a traveling top drive supported by a crown block. The crown block is connected to the derrick. The elevated drilling floor has a control panel comprising a power throttle for operating the top drive.
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