Quick opening envelope

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4470511
SERIAL NO

06559860

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A quick opening envelope which gives full access to its interior upon opening is disclosed. The envelope is formed from a blank constructed from a single sheet of flexible material having a plurality of fold lines defining a front panel, a back panel, two side flaps and a closure flap. The back panel is provided with a V-shaped array of die cut perforations, each of which includes an arc portion and a tangent portion. The V-shaped array of perforations enables neat and easy opening of the envelope.

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Patent Owner(s)

Patent OwnerAddress
MAIL-WELL CORPORATION23 INVERNESS WAY EAST ENGLEWOOD CO 80112

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lillibridge, Harold R Burlingame, CA 15 84
Meeker, David M Saratoga, CA 5 83

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