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发明名称	Valve
摘要
申请公布号	US1804065(A)	申请公布日期	1931.05.05
申请号	US19280287284	申请日期	1928.06.21
申请人	FRICK COMPANY	发明人	SMALL NORMAN M.
分类号	F04B39/10	主分类号	F04B39/10
代理机构		代理人
主权项
地址

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