发明名称 Two-way envelopes with return flap positioning means and method
摘要 An envelope for two-way mailing having opposed front and rear panels secured together around three sides to provide an open edged pocket, a first flap to seal the pocket is foldably carried on the edge of the pocket by one panel. A resealing flap is carried on the edge of the pocket by the other panel. The resealing flap is inwardly folded upon its panel and disposed within the pocket during the first mailing. At least one spot of adhesive is employed to couple the resealing flap to an insert carried within the pocket. When the insert is pulled from the pocket, it automatically lifts the return flap from the pocket placing the envelope in its return mailing condition.
申请公布号 US4382539(A) 申请公布日期 1983.05.10
申请号 US19810271392 申请日期 1981.06.08
申请人 KRONMAN, ALBERT F. 发明人 KRONMAN, ALBERT F.
分类号 B65D27/04;B65D27/06;B65D27/16;B65D27/34;(IPC1-7):B65D27/06 主分类号 B65D27/04
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