Inventor · disambiguated record
Roger John Butland
Also filed as: BUTLAND ROGER J · BUTLAND ROGER JOHN · GRAHAM PETER B
6 granted patents·263 citations·filing 1978–2000
87Inventor score
Files withDEL TECH LTD1DELTEC NEW ZEALAND1DELTEC TELESYSTEMS INTERNAT LT1DELTEC TELESYSTEMS INTERNATION1
Top patents by PatentIndex Score
6 records- 0188US5440318APanel antenna having groups of dipoles fed with insertable delay lines for electrical beam tilting and a mechanically tiltable ground planeFiled 1993·Granted Aug 8, 1995·102 cites·16 claims
- 0286US5801600AVariable differential phase shifter providing phase variation of two output signals relative to one input signalDELTEC NEW ZEALAND·Filed 1994·Granted Sep 1, 1998·89 cites·20 claims
- 0379US4207548ATuned circuitsDEL TECH LTD·Filed 1978·Granted Jun 10, 1980·26 cites·1 claims
- 0478US6317010B1Thermostable circulator with the magnetic characteristics of the ferrite and magnet correlatedDELTEC TELESYSTEMS INTERNAT LT·Filed 2000·Granted Nov 13, 2001·16 cites·15 claims
- 0559US6107895ACirculator and components thereofDELTEC TELESYSTEMS INTERNATION·Filed 1997·Granted Aug 22, 2000·15 cites·15 claims
- 0645US5691735ADipole antenna having coupling tabsFiled 1996·Granted Nov 25, 1997·15 cites·20 claims
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