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发明名称
Book cover
摘要
A book cover for paperback volumes has folded-in longitudinal flaps at two opposed edges thereof. Each flap fits into two slits at the junction of the cover and the spine to lock the book into the cover. Optional reinforcing boards may be used.
申请公布号
US4209187(A)
申请公布日期
1980.06.24
申请号
US19780894981
申请日期
1978.04.10
申请人
FORREST, RICHARD E
发明人
FORREST, RICHARD E
分类号
B42C11/04;B42D1/04;(IPC1-7):B42D3/04
主分类号
B42C11/04
代理机构
代理人
主权项
地址
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