Roger John Butland

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Wellington, NZ

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Patents Grantslast 30 patents

Information Patent Grant
Thermostable circulator with the magnetic characteristics of the fe...
- Patent number 6,317,010
- Issue date Nov 13, 2001
- Deltec Telesystems International Limited
- Roger John Butland
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Circulator and components thereof
- Patent number 6,107,895
- Issue date Aug 22, 2000
- Deltec Telesystems International Limited
- Roger John Butland
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Variable differential phase shifter providing phase variation of tw...
- Patent number 5,801,600
- Issue date Sep 1, 1998
- Deltec New Zealand Limited
- Roger John Butland
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dipole antenna having coupling tabs
- Patent number 5,691,735
- Issue date Nov 25, 1997
- Roger John Butland
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Panel antenna having groups of dipoles fed with insertable delay li...
- Patent number 5,440,318
- Issue date Aug 8, 1995
- Roger J. Butland
- H01 - BASIC ELECTRIC ELEMENTS