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发明名称
Method of fabricating hollow pads
摘要
申请公布号
US2154217(A)
申请公布日期
1939.04.11
申请号
US19370135751
申请日期
1937.04.08
申请人
GENERAL ELECTRIC COMPANY
发明人
SAVAGE MARION A.
分类号
B21D53/04;F28F3/12
主分类号
B21D53/04
代理机构
代理人
主权项
地址
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