Method of and apparatus for assembling spring structures,申请号US19350045915-传众专利搜索

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发明名称	Method of and apparatus for assembling spring structures
摘要
申请公布号	US2064560(A)	申请公布日期	1936.12.15
申请号	US19350045915	申请日期	1935.10.21
申请人	JOSEPH W. DROLL	发明人	OLSON ALEX H.
分类号	B21F33/04	主分类号	B21F33/04
代理机构		代理人
主权项
地址

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