Improvements in or relating to derricks or like hoisting apparatus,申请号GB19310029931-传众专利搜索

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发明名称	Improvements in or relating to derricks or like hoisting apparatus
摘要
申请公布号	GB383730(A)	申请公布日期	1932.11.24
申请号	GB19310029931	申请日期	1931.10.28
申请人	PIERRE JEAN MARCHAUT	发明人
分类号	B66C23/52;B66C23/60	主分类号	B66C23/52
代理机构		代理人
主权项
地址

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