Silver Seiko Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6256105 Copy system and copy controllerExpiredSep 05, 97Jul 03, 01[H04N, G06F]
6247800 Ink jet recording apparatus with ink drop registration controlExpiredOct 31, 97Jun 19, 01[B41J]
5940101 Method and apparatus for determining optimum ink drop formation-frequency in an ink jet printerExpiredJul 08, 96Aug 17, 99[B41J]
5583552 Optimum phase determination based on the detected jet currentExpiredNov 10, 94Dec 10, 96[B41J]
5450111 Ink jet recording apparatus having drop-registration adjusting systemExpiredNov 26, 91Sep 12, 95[B41J]
5402164 Ink jet recording apparatus of the continuous jet typeExpiredOct 30, 91Mar 28, 95[B41J]
5381170 Ink jet recording apparatus of the continuous jet typeExpiredJan 28, 93Jan 10, 95[B41J]
5325112 Ink jet recording apparatus of the continuous jet type and automatic ink jet jetting axis adjusting method of the sameExpiredFeb 19, 93Jun 28, 94[B41J]
5000595 Printing apparatusExpiredApr 19, 90Mar 19, 91[B41J]
D313239 TypewriterExpiredSep 22, 87Dec 25, 90[]
4946297 Printing apparatusExpiredJul 18, 88Aug 07, 90[B41J]
D306249 Combined paper folder and envelope opener or similar articleExpiredJun 24, 87Feb 27, 90[]
D305775 Copying machineExpiredOct 08, 86Jan 30, 90[]
4830525 Typewriter with pivoting keyboardExpiredFeb 18, 88May 16, 89[B41J]
D300434 TypewriterExpiredSep 11, 86Mar 28, 89[]
D299248 TypewriterExpiredSep 11, 86Jan 03, 89[]
D299249 TypewriterExpiredSep 11, 86Jan 03, 89[]
D297714 Score collector for base-ball gameExpiredMay 15, 85Sep 20, 88[]
4734631 Step motor controlExpiredJul 22, 86Mar 29, 88[G05B]
4734632 Driving device for a stepping motorExpiredSep 26, 86Mar 29, 88[G05B]

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