William Frederick MacPherson

Person

Warren, NJ, US

People

Patents Grantslast 30 patents

Information Patent Grant
Control circuitry using two branch circuits for high voltage solid-...
- Patent number 4,656,366
- Issue date Apr 7, 1987
- American Telephone and Telegraph Company AT&T Bell Laboratories
- James A. Davis
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Floating battery feed circuit
- Patent number 4,499,532
- Issue date Feb 12, 1985
- AT&T Bell Laboratories
- Robert C. Hudson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Control circuitry for high voltage solid-state switches
- Patent number 4,447,744
- Issue date May 8, 1984
- Bell Telephone Laboratories, Incorporated
- Adrian R. Hartman
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Protection circuit
- Patent number 4,408,248
- Issue date Oct 4, 1983
- Bell Telephone Laboratories, Incorporated
- Raymond M. Bulley
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Control circuitry for high voltage solid-state switches
- Patent number 4,345,163
- Issue date Aug 17, 1982
- Bell Telephone Laboratories, Incorporated
- James A. Davis
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Integral turn-on high voltage switch
- Patent number 4,309,715
- Issue date Jan 5, 1982
- Bell Telephone Laboratories, Incorporated
- William F. MacPherson
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Control circuitry using a pull-down transistor for high voltage fie...
- Patent number 4,250,409
- Issue date Feb 10, 1981
- Bell Telephone Laboratories, Incorporated
- James A. Davis
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Miniature bridge lifter for telephone lines
- Patent number 4,166,931
- Issue date Sep 4, 1979
- Bell Telephone Laboratories, Incorporated
- William F. MacPherson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone ringer isolator
- Patent number 4,021,617
- Issue date May 3, 1977
- Bell Telephone Laboratories, Incorporated
- Charles Elmer Jones
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

William Frederick MacPherson

Person

Patents Grantslast 30 patents

Control circuitry using two branch circuits for high voltage solid-...

Floating battery feed circuit

Control circuitry for high voltage solid-state switches

Protection circuit

Control circuitry for high voltage solid-state switches

Integral turn-on high voltage switch

Control circuitry using a pull-down transistor for high voltage fie...

Miniature bridge lifter for telephone lines

Telephone ringer isolator