GOULD INSTRUMENT SYSTEMS, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5488698 Rasterization of line segments using difference vectorsExpiredNov 05, 92Jan 30, 96[G06F]
5442188 Strip chart recorder paper attribute detector and monitorExpiredApr 22, 92Aug 15, 95[G06K]
5434593 Display resolution enhancement using data compression and overlapping techniquesExpiredMay 10, 93Jul 18, 95[G09G]
5335253 Non-integral frequency division using regulated digital divider circuitsExpiredOct 01, 92Aug 02, 94[H03K]
5226716 Locking device for electronic moduleExpiredAug 09, 91Jul 13, 93[A47B]
5083477 Control knob locking assemblyExpiredJan 31, 91Jan 28, 92[G05G]
4937590 Thermal printing head and controller using past present and future print data to generate micropulse patternsExpiredJun 13, 89Jun 26, 90[B41J, G01D]
4575687 Voltage adjustable capacitance for frequency response shapingExpiredOct 01, 84Mar 11, 86[H03F]
4521790 Electrostatic printer of video pictures with grey tonesExpiredDec 27, 82Jun 04, 85[G01D]
4459543 Automatic phase compensation circuitExpiredOct 01, 81Jul 10, 84[G01R]
4426031 Method of soldering ink jet nozzle to piezoelectric elementExpiredAug 26, 81Jan 17, 84[G01M, B23K, G01N]
4414852 Automatic zero balance circuitExpiredSep 14, 81Nov 15, 83[H04B, G01B]
4401999 Electrostatic high voltage drive circuit using diodesExpiredNov 06, 80Aug 30, 83[G01D]
4373405 Molded plastic control lock knob with push and/or pull featureExpiredSep 03, 80Feb 15, 83[G05G]
4372773 Method for making ink jet writing devicesExpiredMay 23, 79Feb 08, 83[C03B]
4347758 Molded plastic control lock knobExpiredSep 03, 80Sep 07, 82[G05G]
4348667 Automatic line segment generator for use with linear array display devicesExpiredSep 03, 80Sep 07, 82[G09G]
4347518 Thermal array protection apparatusExpiredMay 29, 81Aug 31, 82[G01D]
4330720 Electrographic recording apparatus employing an improved drive circuitExpiredFeb 04, 80May 18, 82[H03K]
4308546 Ink jet tip assemblyExpiredNov 05, 79Dec 29, 81[G01D]

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