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发明名称
Sheet holding means
摘要
申请公布号
US2085093(A)
申请公布日期
1937.06.29
申请号
US19330688329
申请日期
1933.09.06
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
GAUTHIER MARCEL C.
分类号
B21D49/00
主分类号
B21D49/00
代理机构
代理人
主权项
地址
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