Apparatus for projecting circular markings upon nonplanar surfaces,申请号US19440539980-传众专利搜索

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发明名称	Apparatus for projecting circular markings upon nonplanar surfaces
摘要
申请公布号	US2497853(A)	申请公布日期	1950.02.21
申请号	US19440539980	申请日期	1944.06.12
申请人	CHICAGO BRIDGE & IRON COMPANY	发明人	ARNOLD JOSEPH G.;PIGGOTT WILLIAM C.
分类号	B25H7/00	主分类号	B25H7/00
代理机构		代理人
主权项
地址

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