Paul M. Johnston

Person

Raleigh, NC, US

People

Patents Grantslast 30 patents

Information Patent Grant
Pulse ratio system
- Patent number 5,023,822
- Issue date Jun 11, 1991
- John C. Schlotterer
- G01 - MEASURING TESTING
Information Patent Grant
Electronic display apparatus using time multiplexed data and contro...
- Patent number 4,511,894
- Issue date Apr 16, 1985
- Westinghouse Electric Corp.
- Paul M. Johnston
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Programmable AC electric energy meter having radiation responsive e...
- Patent number 4,298,839
- Issue date Nov 3, 1981
- Westinghouse Electric Corp.
- Paul M. Johnston
- G01 - MEASURING TESTING
Information Patent Grant
Programmable time registering AC electric energy meter having elect...
- Patent number 4,283,772
- Issue date Aug 11, 1981
- Westinghouse Electric Corp.
- Paul M. Johnston
- G01 - MEASURING TESTING
Information Patent Grant
Automatic transfer control device and frequency monitor
- Patent number 4,231,029
- Issue date Oct 28, 1980
- Westinghouse Electric Corp.
- Paul M. Johnston
- G01 - MEASURING TESTING
Information Patent Grant
Auxiliary power supply and timer arrangement for time registering m...
- Patent number 4,197,582
- Issue date Apr 8, 1980
- Westinghouse Electric Corp.
- Paul M. Johnston
- G01 - MEASURING TESTING
Information Patent Grant
Automatic transfer control device and frequency monitor
- Patent number 4,090,090
- Issue date May 16, 1978
- Westinghouse Electric Corp.
- Paul M. Johnston
- G01 - MEASURING TESTING
Information Patent Grant
Digital processing and calculating AC electric energy metering system
- Patent number 4,077,061
- Issue date Feb 28, 1978
- Westinghouse Electric Corporation
- Paul M. Johnston
- G01 - MEASURING TESTING

Paul M. Johnston

Person

Patents Grantslast 30 patents

Pulse ratio system

Electronic display apparatus using time multiplexed data and contro...

Programmable AC electric energy meter having radiation responsive e...

Programmable time registering AC electric energy meter having elect...

Automatic transfer control device and frequency monitor

Auxiliary power supply and timer arrangement for time registering m...

Automatic transfer control device and frequency monitor

Digital processing and calculating AC electric energy metering system