发明名称 |
Collapsible photographic slide viewer |
摘要 |
A collapsible optical viewer is comprised of a front wall having a light-admitting opening therein; a rear wall assembly having a coincident viewing aperture therein; top and bottom walls contiguous with the front and rear walls; and, side walls, one of which includes a continuous extension for forming a channel proximate the front wall whereby a photographic film strip may be received therein. A blank suitable for assembling the viewer is also described.
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申请公布号 |
US4242818(A) |
申请公布日期 |
1981.01.06 |
申请号 |
US19780964474 |
申请日期 |
1978.11.29 |
申请人 |
CREATIVE CARTONS OF ASHLAND, INC. |
发明人 |
CARVER, ROBERT G. |
分类号 |
G02B27/04;(IPC1-7):G09F13/00 |
主分类号 |
G02B27/04 |
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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