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发明名称
Memorandum holder
摘要
申请公布号
US2108526(A)
申请公布日期
1938.02.15
申请号
US19370133791
申请日期
1937.03.30
申请人
CLIFFORD CHARLES C
发明人
CLIFFORD CHARLES C.
分类号
B42F7/14
主分类号
B42F7/14
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代理人
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