Locking envelope

Details Locking envelope Locking envelope

1979-11-29

1980-12-23

Garbe, Stephen P.

Envelopes, wrappers, and paperboard boxes

Envelope

Closures

229 84, B65D 2722

Patent

active

042405777

ABSTRACT:
An envelope which is closed and secured without adhesive for repeated use. A tuck, flap extension of the closure flap is infolded and tucked back in between the back panel and a lock flap partially overlying the back panel. The back panel and the lock flap, folded back upon it, are secured to the front panel by overlying end tabs.

REFERENCES:
patent: 74867 (1868-02-01), Ullman
patent: 180200 (1876-07-01), Chapman
patent: 1459414 (1923-06-01), Parks
patent: 1459415 (1923-06-01), Parks
patent: 3124299 (1964-03-01), Stone et al.
patent: 3756504 (1973-09-01), Bock
patent: 3955752 (1976-05-01), Harrigan

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