GRAPHIC SYSTEMS SERVICES, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7300051 Rippler for a paper delivererExpiredOct 24, 03Nov 27, 07[B65H]
4897332 Charge control agent combination of lecithin and pyrrolidone polymer for liquid toner and methods of useExpiredOct 05, 88Jan 30, 90[G03G]
4891286 Methods of using liquid tower dispersions having enhanced colored particle mobilityExpiredNov 21, 88Jan 02, 90[G03G]
4705199 Vacuum drum for securing a film theretoExpiredJun 28, 85Nov 10, 87[B65H]
4572047 Quick change slitter wheel holderExpiredMay 31, 84Feb 25, 86[B26D]
4554044 Collating apparatus with adjustable gearExpiredMar 07, 84Nov 19, 85[B32B]
4536176 Crimp blade holderExpiredSep 21, 83Aug 20, 85[B42B]
4514819 Apparatus and method for measuring rotational positionExpiredJun 04, 82Apr 30, 85[G06F, G06G]
4495582 Control system for pre-setting and operation of a printing press and collatorExpiredJun 04, 82Jan 22, 85[G06F, B65H]
4495583 Apparatus and method for encoding positions of web press machinesExpiredJun 04, 82Jan 22, 85[G06F, G06G]
4475425 Blade holding deviceExpiredJun 01, 82Oct 09, 84[B26D]
4471977 Flexible form assemblyExpiredMay 13, 82Sep 18, 84[B41L, B42D]
4426072 Glue application system for a collating machineExpiredApr 30, 81Jan 17, 84[B05C, B42B]
4422630 Blade holder and method of using the sameExpiredMay 14, 82Dec 27, 83[B42B]

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