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经营范围
发明名称
Metallic spool or reel
摘要
申请公布号
US1920420(A)
申请公布日期
1933.08.01
申请号
US19290408442
申请日期
1929.11.20
申请人
J. L. CLARK MANUFACTURING CO.
发明人
MILLS WALLACE C.
分类号
B65H75/14
主分类号
B65H75/14
代理机构
代理人
主权项
地址
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