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2601530
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Information
Patent Grant
2601530
References
Source
Patent Number
2,601,530
Date Filed
Not available
Date Issued
Tuesday, June 24, 1952
71 years ago
CPC
B65D27/02 - with stiffening inserts
B42D15/08 - Letter-cards or letter-sheets
Y10S229/936 - Three or more blanks with alternating orientations
US Classifications
229 - Envelopes, wrappers, and paperboard boxes
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