Offset piston ring construction,申请号US19400364674-传众专利搜索

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发明名称	Offset piston ring construction
摘要
申请公布号	US2273691(A)	申请公布日期	1942.02.17
申请号	US19400364674	申请日期	1940.11.07
申请人	POWER RESEARCH CORPORATION	发明人	BOWERS THOMAS A.
分类号	F16J9/20	主分类号	F16J9/20
代理机构		代理人
主权项
地址

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