Clearance valve construction,申请号US19290343744-传众专利搜索

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发明名称	Clearance valve construction
摘要
申请公布号	US1874135(A)	申请公布日期	1932.08.30
申请号	US19290343744	申请日期	1929.03.01
申请人	INGERSOLL-RAND COMPANY	发明人	SPOOR WILLIAM M.
分类号	F04B49/16	主分类号	F04B49/16
代理机构		代理人
主权项
地址

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