John J. Kuhn

Person

Allison Park, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Railroad highway crossing warning system
- Patent number 4,324,376
- Issue date Apr 13, 1982
- American Standard Inc.
- John J. Kuhn
- B61 - RAILWAYS
Information Patent Grant
Fail-safe and gate circuit
- Patent number 4,320,315
- Issue date Mar 16, 1982
- American Standard Inc.
- John J. Kuhn
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
High power audio frequency transmitter
- Patent number 4,314,374
- Issue date Feb 2, 1982
- Westinghouse Air Brake Company
- John J. Kuhn
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Railroad grade crossing constant warning protection system
- Patent number 4,307,860
- Issue date Dec 29, 1981
- American Standard Inc.
- John J. Kuhn
- B61 - RAILWAYS
Information Patent Grant
Dual signal frequency motion monitor and broken rail detector
- Patent number 4,306,694
- Issue date Dec 22, 1981
- American Standard Inc.
- John J. Kuhn
- B61 - RAILWAYS
Information Patent Grant
Electronic overload protection circuit
- Patent number 4,301,490
- Issue date Nov 17, 1981
- American Standard Inc.
- Harry C. Nagel
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Low and high frequency oscillators having common voltage regulator...
- Patent number 4,136,315
- Issue date Jan 23, 1979
- Westinghouse Air Brake Company
- John J. Kuhn
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
D.C. to A.C. electronic inverter with overload protection
- Patent number 4,079,444
- Issue date Mar 14, 1978
- Westinghouse Air Brake Company
- John J. Kuhn
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

John J. Kuhn

Person

Patents Grantslast 30 patents

Railroad highway crossing warning system

Fail-safe and gate circuit

High power audio frequency transmitter

Railroad grade crossing constant warning protection system

Dual signal frequency motion monitor and broken rail detector

Electronic overload protection circuit

Low and high frequency oscillators having common voltage regulator...

D.C. to A.C. electronic inverter with overload protection