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Title:
Envelope
United States Patent 3322329
Inventors:
Castaneda, Federico L.
David, Castaneda
Publication Date:
05/30/1967
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Assignee:
Castaneda, Federico L.
David, Castaneda
Primary Class:
229/316
International Classes:
B65D27/34
;
B65D27/00
US Patent References:
0895053
2828065
Quick opening construction for window envelopes
Foreign References:
AU243424B
IT319677B