| 发明名称 |
Photograph and negative holder |
| 摘要 |
A photograph and negative holder providing for display of the photograph and negative in back to back relationship in individual transparent envelopes and including a hinge flap for securing the photographs and a writing surface on one of the surfaces of the envelope.
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| 申请公布号 |
US3940778(A) |
申请公布日期 |
1976.02.24 |
| 申请号 |
US19740512471 |
申请日期 |
1974.10.07 |
| 申请人 |
LAWRENCE PESKA ASSOCIATES, INC. |
发明人 |
CRAIG, JULES M.;KARSTED, PHILIP |
| 分类号 |
B42F5/00;B42F7/02;G03B21/64;(IPC1-7):G09F1/10 |
主分类号 |
B42F5/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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