REUSABLE LETTER ENVELOPE AND METHOD OF REUSE OF SUCH ENVELOPE

摘要

FIELD: postal service. SUBSTANCE: envelope has front rectangular blank with upper, lower and side flaps, address requisitions, text and decorative information and cost. Outer side of lower flap bears indication of reusable envelope. Flaps are opened without damage; side flaps are glued the last. EFFECT: enhanced efficiency. 3 cl, 1 dwg