Plural work holders retractable only upon fully advanced position of each work holder,申请号US19530350545-传众专利搜索

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发明名称	Plural work holders retractable only upon fully advanced position of each work holder
摘要
申请公布号	US2714213(A)	申请公布日期	1955.08.02
申请号	US19530350545	申请日期	1953.04.23
申请人	JOSEF HOLZER	发明人	HOLZER JOSEF
分类号	B23G1/20	主分类号	B23G1/20
代理机构		代理人
主权项
地址

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