Porous body expansion joint,申请号US19400330770-传众专利搜索

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发明名称	Porous body expansion joint
摘要
申请公布号	US2370647(A)	申请公布日期	1945.03.06
申请号	US19400330770	申请日期	1940.04.20
申请人	FISCHER ALBERT C	发明人	FISCHER ALBERT C.
分类号	E01C11/10	主分类号	E01C11/10
代理机构		代理人
主权项
地址

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