AT&T TELETYPE CORPORATION A CORP OF DE

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D302682 Printer controllerExpiredSep 04, 86Aug 08, 89[]
4804238 Torsion spring powered doorExpiredJan 28, 87Feb 14, 89[A47B]
4787759 Print head gap adjustment mechanism with skew compensationExpiredMay 29, 87Nov 29, 88[B41J]
D298637 Combined printer support and paper handling platformExpiredNov 01, 85Nov 22, 88[]
D295976 Multifunction communication controllerExpiredNov 14, 85May 31, 88[]
4733823 Silicon nozzle structures and method of manufactureExpiredOct 24, 86Mar 29, 88[A62C, G01D]
D294579 Housing for a printed circuit boardExpiredDec 23, 85Mar 08, 88[]
D294357 40 column printer cabinetExpiredJun 27, 85Feb 23, 88[]
4723361 IC insertion/extraction toolExpiredAug 18, 86Feb 09, 88[B25B, H05K, B25F]
4704675 Method for velocity adjustment of ink jet nozzles in a nozzle arrayExpiredDec 22, 86Nov 03, 87[G01D]
D289762 Voice data communications terminalExpiredNov 05, 84May 12, 87[]
4643598 Print head for wire matrix printerExpiredAug 12, 85Feb 17, 87[B41J]
4637037 Biphase signal receiverExpiredAug 29, 84Jan 13, 87[H03D]
4618787 Adjustable time delay circuitExpiredDec 09, 83Oct 21, 86[H03K]
D285576 Printer ribbon cartridgeExpiredAug 29, 84Sep 09, 86[]
4605323 Dual quality wire matrix print headExpiredJul 02, 85Aug 12, 86[B41J]
4600929 Apparatus for handling paper in a printerExpiredJun 01, 84Jul 15, 86[B65H, G03G, G01D]
4582439 Printer ribbon cartridgeExpiredAug 01, 84Apr 15, 86[B41J]
4575859 Receiver for digital signalsExpiredMar 23, 84Mar 11, 86[H03K]
4571826 Method of manufacturing a thermal print headExpiredNov 19, 84Feb 25, 86[H05K]

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