Self-hinging laminated plastic folders
United States Patent 3206225

Inventors:
Oleson, Delbert A.
Publication Date:
09/14/1965
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Assignee:
Oleson, Delbert A.
Primary Class:
281/29
Other Classes:
281/35, 412/17, 156/227, 412/3, 281/20
International Classes:
B42F5/00
US Patent References:
2788041Card protecting device and method of making same
2997417Method of preparing record carrier
3068140Method of making plastic identification plates