MAIL-WELL CORPORATION

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Patent Activity in the Last 10 Years

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5636782 Envelope with 3-D image viewing featuresExpiredJul 12, 95Jun 10, 97[B65D]
5316210 Paperboard storage containerExpiredMay 14, 93May 31, 94[B65D]
4607433 Mark locatorExpiredApr 15, 85Aug 26, 86[G01B]
4607749 Easy open envelopeExpiredApr 01, 85Aug 26, 86[B65D]
4585221 Envelope forming machine with envelope blank stack sensorExpiredJun 12, 85Apr 29, 86[B65H, B31B]
4545846 Envelope gumbox friction brake and safety slip clutchExpiredAug 27, 84Oct 08, 85[B32B]
4531038 Radio frequency dielectric heaterExpiredJun 11, 84Jul 23, 85[H05B]
4506452 Method and apparatus for RF drying of coated articlesExpiredNov 01, 82Mar 26, 85[F26B]
4504260 Method and apparatus for scoring and folding envelopesExpiredNov 08, 82Mar 12, 85[B31B]
4492308 Quick opening envelopeExpiredJan 17, 84Jan 08, 85[B65D]
4470511 Quick opening envelopeExpiredDec 12, 83Sep 11, 84[B65D]
4422241 Mark locator and method of using sameExpiredMay 18, 82Dec 27, 83[G01B]
4419837 Apparatus for displaying advertising materialExpiredJun 24, 81Dec 13, 83[B65D]
4416651 Envelope gummer cylinder clutch and brakeExpiredJul 30, 81Nov 22, 83[B31B]
4397262 Apparatus for applying and drying sealing material to the seal flap of envelopesExpiredMar 04, 82Aug 09, 83[B05C]
4388071 Gum applying apparatusExpiredNov 24, 81Jun 14, 83[B31B]
4349107 Meter chart envelopeExpiredJan 23, 81Sep 14, 82[B65D]
4338085 Apparatus for manufacturing envelopesExpiredApr 03, 80Jul 06, 82[B31B]
4290547 Reclosable envelope and method of manufactureExpiredMar 12, 80Sep 22, 81[B42F, B65D]
4283003 Reclosable envelopeExpiredDec 19, 79Aug 11, 81[B65D]

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