EP 0097421 A2 19840104 - Two-way envelope unit.
Title (en)
Two-way envelope unit.
Title (de)
Zweiwegbriefumschlageinheit.
Title (fr)
Ensemble d'enveloppe utilisable à l'aller et au retour.
Publication
Application
Priority
CA 405735 A 19820622
Abstract (en)
This invention concerns a two-way envelope having a front and rear surface formed of a single rectangular sheet folded upon itself about a transverse central foldline. The envelope comprises overlying front and rear return envelope panels, overlying front and rear data bearing panels, and front and rear transverse lines of separation parallel to the central transverse foldline and separating the return envelope panels from the data bearing panels. The transverse lines of separation are offset to define on one surface of the envelope a return envelope flap adjoining one of the return envelope panels by a line of weakness. Adhesive is disposed on the inner surface of the return envelope flap, and sealing means secures the three free edges of the two-way envelope about the central foldline except those portions of the edges coincident with the return envelope flap.
IPC 1-7
IPC 8 full level
B42D 15/08 (2006.01); B65D 27/00 (2006.01); B65D 27/06 (2006.01)
CPC (source: EP)
B42D 15/08 (2013.01); B65D 27/06 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0097421 A2 19840104; EP 0097421 A3 19860212; EP 0097421 B1 19871104; AT E30564 T1 19871115; CA 1199309 A 19860114; DE 3374296 D1 19871210; MX 156084 A 19880701
DOCDB simple family (application)
EP 83302582 A 19830509; AT 83302582 T 19830509; CA 405735 A 19820622; DE 3374296 T 19830509; MX 19748183 A 19830531