发明申请
US20160159447A1 WATERCRAFT POSITIONING SYSTEM 审中-公开
水位定位系统

WATERCRAFT POSITIONING SYSTEM
摘要:
Modifications to the lifting structure of prior art boat lifts permit the addition of support and drive rollers and associated drive mechanisms that may be used to displace the bow (or stern) of a raised boat over an adjacent barrier such as a sea wall, dock, or bulkhead.
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