Piston packing ring,申请号US19300476258-传众专利搜索

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发明名称	Piston packing ring
摘要
申请公布号	US1822101(A)	申请公布日期	1931.09.08
申请号	US19300476258	申请日期	1930.08.19
申请人	LEWIS JAMES C	发明人	LEWIS JAMES C.
分类号	F16J9/14	主分类号	F16J9/14
代理机构		代理人
主权项
地址

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