Roger A. Frankland

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Scottsdale, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Valve means and mercury reservoir for gas discharge display
- Patent number 4,317,062
- Issue date Feb 23, 1982
- Beckman Instruments, Inc.
- Roger A. Frankland
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of sealing gas discharge displays
- Patent number 4,182,540
- Issue date Jan 8, 1980
- Beckman Instruments, Inc.
- Roger A. Frankland
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High intensity bar graph
- Patent number 4,127,794
- Issue date Nov 28, 1978
- Beckman Instruments, Inc.
- Roger A. Frankland
- H01 - BASIC ELECTRIC ELEMENTS