Assignee
NORTHERN TELECOM INC
30 granted patents·518 citations·filing 1974–1997
Top patents by PatentIndex Score
30 records- 0194US4414589AEmbedded servo track following system and method for writing servo tracksNORTHERN TELECOM INC·Filed 1981·Granted Nov 8, 1983·129 cites·71 claims
- 0290US4291202ATelephone handset chassis and flexible printed circuitNORTHERN TELECOM INC·Filed 1979·Granted Sep 22, 1981·40 cites·18 claims
- 0389US4271333APushbutton dial assemblyNORTHERN TELECOM INC·Filed 1979·Granted Jun 2, 1981·33 cites·15 claims
- 0484US4001559AProgrammable measuringNORTHERN TELECOM INC·Filed 1974·Granted Jan 4, 1977·31 cites·13 claims
- 0582US4284855ABase for telephone set, for alternative desk and wall mountingNORTHERN TELECOM INC·Filed 1979·Granted Aug 18, 1981·23 cites·9 claims
- 0680US4292477ATelephone set base for both wall and desk mountingNORTHERN TELECOM INC·Filed 1979·Granted Sep 29, 1981·21 cites·17 claims
- 0769US4390744AFixed count terminalNORTHERN TELECOM INC·Filed 1980·Granted Jun 28, 1983·26 cites·47 claims
- 0869US4359611AModular switchNORTHERN TELECOM INC·Filed 1980·Granted Nov 16, 1982·14 cites·20 claims
- 0965US6198734B1Adaptive radio communications systemNORTHERN TELECOM INC·Filed 1997·Granted Mar 6, 2001·52 cites·15 claims
- 1061US4286835AModular telephone connectorNORTHERN TELECOM INC·Filed 1980·Granted Sep 1, 1981·21 cites·6 claims
- 1160US4307305APrecision rectifier circuitsNORTHERN TELECOM INC·Filed 1980·Granted Dec 22, 1981·15 cites·6 claims
- 1258US4342883APushbutton switch assemblies for telephone setsNORTHERN TELECOM INC·Filed 1979·Granted Aug 3, 1982·8 cites·6 claims
- 1358US4319107AEnclosed modular switchNORTHERN TELECOM INC·Filed 1980·Granted Mar 9, 1982·10 cites·10 claims
- 1456US4320338AMethods of and apparatus for determining the capacitance of a transmission line by integrating line currentsNORTHERN TELECOM INC·Filed 1980·Granted Mar 16, 1982·18 cites·25 claims
- 1554US4327393AProtector module base assembly with an external spark gapNORTHERN TELECOM INC·Filed 1980·Granted Apr 27, 1982·12 cites·7 claims
- 1651US4405967AGas tube overvoltage protector with back-up gapNORTHERN TELECOM INC·Filed 1981·Granted Sep 20, 1983·10 cites·10 claims
- 1751US4398166ACompensator for CRT deflection yokes and the likeNORTHERN TELECOM INC·Filed 1981·Granted Aug 9, 1983·7 cites·14 claims
- 1850US4414426AAerial cable terminalNORTHERN TELECOM INC·Filed 1981·Granted Nov 8, 1983·12 cites·25 claims
- 1946US4165450ATelephone signalling test systemNORTHERN TELECOM INC·Filed 1978·Granted Aug 21, 1979·8 cites·11 claims
- 2045US4511936ASwitch and optical sensor assembly for recorderNORTHERN TELECOM INC·Filed 1982·Granted Apr 16, 1985·5 cites·20 claims
- 2138US4317052AApparatus for converting an A.C. input signal to a rectified and smoothed D.C. signalNORTHERN TELECOM INC·Filed 1980·Granted Feb 23, 1982·6 cites·11 claims
- 2237US4351984AApparatus for use in a telephone exchange including an operator cordboard positionNORTHERN TELECOM INC·Filed 1980·Granted Sep 28, 1982·5 cites·9 claims
- 2334US4443758AMeter to printer coupling circuitNORTHERN TELECOM INC·Filed 1981·Granted Apr 17, 1984·2 cites·6 claims
- 2434US4293887ASurge arrester with improved impulse ratioNORTHERN TELECOM INC·Filed 1979·Granted Oct 6, 1981·4 cites·12 claims
- 2531US4362995AMethod of and apparatus for producing a logarithmic representation of an input voltageNORTHERN TELECOM INC·Filed 1980·Granted Dec 7, 1982·3 cites·10 claims
- 2630US4425524APiezoelectric switch using piezoceramic bending elements, and in particular a relay utilizing such elementsNORTHERN TELECOM INC·Filed 1982·Granted Jan 10, 1984·1 cites·4 claims
- 2729US4346956ADistributing frame and terminal block member assembliesNORTHERN TELECOM INC·Filed 1980·Granted Aug 31, 1982·0 cites·3 claims
- 2828USD276429SCombined printed circuit board carrier and component trayNORTHERN TELECOM INC·Filed 1981·Granted Nov 20, 1984·1 cites·1 claims
- 2925USD271217SCombined copy stand and electronic interface deviceNORTHERN TELECOM INC·Filed 1981·Granted Nov 1, 1983·1 cites·1 claims
- 3019US4394123ATiltable support bracket for slidably supporting quartz support tubes for semiconductor wafer processing boards, and processing apparatus embodying such bracketsNORTHERN TELECOM INC·Filed 1982·Granted Jul 19, 1983·0 cites·11 claims
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