AMTECH PATENT LICENSING CORPORATION

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4469995 Method of stopping a stepping motorExpiredJul 19, 82Sep 04, 84[H02K]
4456240 Paper supply and stacking apparatusExpiredNov 16, 81Jun 26, 84[B65H]
4438379 Method of damping a stepping motorExpiredJun 15, 81Mar 20, 84[G05B]
4394076 Indicia recording apparatusExpiredJul 10, 81Jul 19, 83[H04I, B41B, G01D]
4386271 Clock generatorExpiredJul 17, 81May 31, 83[G06K]
4330739 Method of determining operating parameters for a stepping motorExpiredJan 29, 81May 18, 82[G05B]
4310226 Indicia recording apparatusExpiredJul 31, 80Jan 12, 82[H04I, B41B, G01D]
4297626 Method of determining operating currents for stepping motorExpiredFeb 07, 80Oct 27, 81[G05B]
4280084 Method of and apparatus for operating stepping motorsExpiredOct 09, 79Jul 21, 81[G05B]
4215302 Control system for stepping motors, a method of operating stepping motors, and a method for selecting current patterns for stepping motorsExpiredJan 26, 78Jul 29, 80[H02K]

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