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发明名称
Permanent loose leaf binder
摘要
申请公布号
US1992501(A)
申请公布日期
1935.02.26
申请号
US19310569334
申请日期
1931.10.16
申请人
REMINGTON RAND INC.
发明人
NEWLAND JAY RAYMOND;POLDERMAN JOSEPH J.
分类号
B42F13/32;B42F13/42
主分类号
B42F13/32
代理机构
代理人
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地址
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