Roof expansion bolt having a flexible strap connecting shell halves for anchoring,申请号US19540447543-传众专利搜索

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发明名称	Roof expansion bolt having a flexible strap connecting shell halves for anchoring
摘要
申请公布号	US2799201(A)	申请公布日期	1957.07.16
申请号	US19540447543	申请日期	1954.08.03
申请人	GENTER ALBERT H	发明人	GENTER ALBERT H.
分类号	E21D21/00	主分类号	E21D21/00
代理机构		代理人
主权项
地址

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