Foldable postal card
United States Patent 3141549
US Patent References:
Latching device
- - 2164027

Mailable display holder
- - 2472166

Box with hinged cover
- - 3035752


Inventors:
Karl, Koehler
Publication Date:
07/21/1964
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Assignee:
Karl, Koehler
Primary Class:
206/232
Other Classes:
206/534, 428/136, 16/225, 229/92.800
International Classes:
B42D15/04