EPSON CORPORATION, A JAPANESE COMPANY

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D291442 ComputerExpiredSep 24, 84Aug 18, 87[]
4602882 Control system of serial printerExpiredAug 04, 83Jul 29, 86[B41J]
D282844 Personal computerExpiredMar 17, 83Mar 04, 86[]
4567448 Variable frequency oscillatorExpiredAug 04, 83Jan 28, 86[H03L]
D280645 Ink roller setExpiredJan 27, 83Sep 17, 85[]
D280527 Ink roller setExpiredJan 27, 83Sep 10, 85[]
D275296 Ink ribbon cartridgeExpiredJan 27, 83Aug 28, 84[]
4457639 Motor control for printer carriageExpiredSep 30, 82Jul 03, 84[B41J, G05B]

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