| 发明名称 |
Book marker employing endless elastic band |
| 摘要 |
A book marker for books of the type having front and back covers includes an endless elastic band for encircling one of the covers and at least one marking strip joined to the elastic band for marking preselected pages of the book between the covers.
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| 申请公布号 |
US4041892(A) |
申请公布日期 |
1977.08.16 |
| 申请号 |
US19750618439 |
申请日期 |
1975.10.01 |
| 申请人 |
NICHOLS, MARY V. |
发明人 |
NICHOLS, MARY V. |
| 分类号 |
B42D3/14;(IPC1-7):B42D9/00 |
主分类号 |
B42D3/14 |
| 代理机构 |
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代理人 |
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