Welding hood with hard hat,申请号US19540440750-传众专利搜索

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发明名称	Welding hood with hard hat
摘要
申请公布号	US2753562(A)	申请公布日期	1956.07.10
申请号	US19540440750	申请日期	1954.07.01
申请人	THE ROBERT L. JOHNSON CORPORATION	发明人	MCDONALD WARREN SAND
分类号	A42B3/14	主分类号	A42B3/14
代理机构		代理人
主权项
地址

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