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发明名称
Sailboard rig and boom
摘要
In a sailboard rig, the boom is provided at its mast end with an extension using a torsion spring, which in an operative position extends in the plane of the boom and which is provided at its fore end with an eye for attaching a starting sheet.
申请公布号
US4498411(A)
申请公布日期
1985.02.12
申请号
US19820372565
申请日期
1982.04.28
申请人
MARKER, HANNES
发明人
MARKER, FRANK P.
分类号
B63B35/79;(IPC1-7):B63H9/10
主分类号
B63B35/79
代理机构
代理人
主权项
地址
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