John Foster Farrow

Person

Plymouth, MI, US

People

Patents Grantslast 30 patents

Information Patent Grant
Amplifier circuit for a current transformer
- Patent number 8,212,570
- Issue date Jul 3, 2012
- Welding Technology Corporation
- John Foster Farrow
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Methods to detect hazardous conditions in a safety ground circuit i...
- Patent number 8,174,399
- Issue date May 8, 2012
- Welding Technology Corporation
- John Foster Farrow
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Door interlock for rotary actuated circuit breaker
- Patent number 7,420,133
- Issue date Sep 2, 2008
- Welding Technology COrporation
- John Foster Farrow
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for determining a condition of a resistance spotwelding syst...
- Patent number 6,342,686
- Issue date Jan 29, 2002
- Medar, Inc.
- John F. Farrow
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method for determining a condition of a resistance spotwelding syst...
- Patent number 6,225,590
- Issue date May 1, 2001
- Medar, Inc.
- John F. Farrow
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of stabilizing an electronic signal integrator
- Patent number 5,793,243
- Issue date Aug 11, 1998
- Medar, Inc.
- John F. Farrow
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and system for controlling output current of a large, low-vo...
- Patent number 5,757,176
- Issue date May 26, 1998
- Medar, Inc.
- John F. Farrow
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Automatic stepper for resistance welding
- Patent number 4,885,451
- Issue date Dec 5, 1989
- Medar, Inc.
- John F. Farrow
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method and apparatus for determining the power factor of a circuit
- Patent number 4,851,635
- Issue date Jul 25, 1989
- Medar, Inc.
- John F. Farrow
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
High frequency resistance spot welding structure and method
- Patent number 4,831,229
- Issue date May 16, 1989
- Medar, Inc.
- John F. Farrow
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Structure and method for resistance welding with an inductively cou...
- Patent number 4,804,819
- Issue date Feb 14, 1989
- Medar, Inc.
- John F. Farrow
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of and structure for high speed resistance seam welding
- Patent number 4,733,045
- Issue date Mar 22, 1988
- Medar, Inc.
- John F. Farrow
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Structure for and method of reducing impedance in multiphase direct...
- Patent number 4,513,363
- Issue date Apr 23, 1985
- Medar, Inc.
- John F. Farrow
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Door Interlock for Rotary Actuated Circuit Breaker
- Publication number 20080053797
- Publication date Mar 6, 2008
- John Foster Farrow
- H01 - BASIC ELECTRIC ELEMENTS

John Foster Farrow

Person

Patents Grantslast 30 patents

Amplifier circuit for a current transformer

Methods to detect hazardous conditions in a safety ground circuit i...

Door interlock for rotary actuated circuit breaker

Method for determining a condition of a resistance spotwelding syst...

Method for determining a condition of a resistance spotwelding syst...

Method of stabilizing an electronic signal integrator

Method and system for controlling output current of a large, low-vo...

Automatic stepper for resistance welding

Method and apparatus for determining the power factor of a circuit

High frequency resistance spot welding structure and method

Structure and method for resistance welding with an inductively cou...

Method of and structure for high speed resistance seam welding

Structure for and method of reducing impedance in multiphase direct...

Patents Applicationslast 30 patents

Door Interlock for Rotary Actuated Circuit Breaker