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Stanley D. Rosenbaum
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Ottawa, CA
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last 30 patents
Information
Patent Grant
Hazard prevention for telephone line interface circuits
Patent number
5,666,406
Issue date
Sep 9, 1997
Northern Telecom Limited
Brian A. F. S. Sutherland
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Telephone line interface circuit with voltage control
Patent number
5,661,794
Issue date
Aug 26, 1997
Northern Telecom Limited
Reinhard W. Rosch
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of providing d.c. feed to a telephone line
Patent number
5,511,118
Issue date
Apr 23, 1996
Northern Telecom Limited
Stanley A. Gores
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Protection and recovery of telephone line interface circuits
Patent number
5,390,231
Issue date
Feb 14, 1995
Northern Telecom Limited
Paul F. Hung
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Telephone line interface circuit with voltage switching
Patent number
5,323,461
Issue date
Jun 21, 1994
Northern Telecom Limited
Stanley D. Rosenbaum
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wideband telephone line interface circuit
Patent number
5,274,702
Issue date
Dec 28, 1993
Northern Telecom Limited
Reinhard W. Rosch
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
High voltage converter
Patent number
5,103,387
Issue date
Apr 7, 1992
Northern Telecom Limited
Stanley D. Rosenbaum
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Protection arrangement for a telephone subscriber line interface ci...
Patent number
4,947,427
Issue date
Aug 7, 1990
Northern Telecom Limited
Reinhard W. Rosch
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Active impedance line feed circuit
Patent number
4,764,956
Issue date
Aug 16, 1988
Northern Telecom Limited
Reinhard Rosch
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Amplifier with double rail output
Patent number
4,713,838
Issue date
Dec 15, 1987
Northern Telecom Limited
Stanley D. Rosenbaum
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Voltage multiplier and voltage multipliers in an amplifier with dou...
Patent number
4,691,271
Issue date
Sep 1, 1987
Northern Telecom Limited
Stanley D. Rosenbaum
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Active impedance line feed circuit with improved ground fault prote...
Patent number
4,571,460
Issue date
Feb 18, 1986
Northern Telecom Limited
Stanley D. Rosenbaum
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Active impedance transformer assisted line feed circuit with superv...
Patent number
4,539,438
Issue date
Sep 3, 1985
Northern Telecom Limited
Stanley D. Rosenbaum
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Line feed circuit including negative impedance circuit
Patent number
4,532,384
Issue date
Jul 30, 1985
Northern Telecom Limited
Magdy H. Keriakos
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Active impedance line feed circuit
Patent number
4,532,381
Issue date
Jul 30, 1985
Northern Telecom Limited
Stanley D. Rosenbaum
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Active impedance line feed circuit
Patent number
4,514,595
Issue date
Apr 30, 1985
Northern Telecom Limited
Stanley D. Rosenbaum
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Active impedance transformer assisted line feed circuit
Patent number
4,484,032
Issue date
Nov 20, 1984
Northern Telecom Limited
Stanley D. Rosenbaum
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multi-ripple charge coupled device
Patent number
3,961,352
Issue date
Jun 1, 1976
Northern Electric Company Limited
Douglas Roy Colton
H01 - BASIC ELECTRIC ELEMENTS