Adjustable envelope

Details Adjustable envelope Adjustable envelope

1975-07-01

1977-05-10

Price, William

Envelopes, wrappers, and paperboard boxes

Envelope

229 72, 229DIG9, B65D 2700

Patent

active

040223744

ABSTRACT:
The invention comprises a pair of smaller envelopes which can be joined together at adjacent open ends to form a larger envelope of varying sizes, wherein each smaller envelope can be individually sealed to form smaller individual envelopes or can be adjustably interlocked to form the larger envelope.

REFERENCES:
patent: 1514371 (1924-11-01), Clough
patent: 2361984 (1944-11-01), Williamson
patent: 3004659 (1961-10-01), Usher et al.
patent: 3063618 (1962-11-01), Berkowitz
patent: 3332550 (1967-07-01), Sejman
patent: 3876134 (1975-04-01), Rice et al.

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