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3734391
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Information
Patent Grant
3734391
References
Source
Patent Number
3,734,391
Date Filed
Not available
Date Issued
Tuesday, May 22, 1973
51 years ago
CPC
B65D5/3642 - the secured corners presenting diagonal, bissecting or similar folding lines, the central panel presenting no folding line
B65D5/302 - combined with a slot provided in an adjacent side wall
B65D5/4279 - Joints, seams, leakproof joints or corners, special connections between panels
B65D5/6667 - and connected to one another in order to form an uninterrupted telescoping flange
US Classifications
229 - Envelopes, wrappers, and paperboard boxes
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