|
| US5194732 | 2 déc. 1991 | 16 mars 1993 | | Charged-particle energy analyzer and mass spectrometer incorporating it |
| US5198666 | 2 déc. 1991 | 30 mars 1993 | | Mass spectrometer having a multichannel detector |
| US5513002 | 17 mars 1994 | 30 avr. 1996 | The A.R.T. Group, Inc. | Optical corona monitoring system |
| US5530244 | 7 oct. 1994 | 25 juin 1996 | Northrop Grumman Corporation | Solid state detector for sensing low energy charged particles |
| US5550629 | 7 juin 1995 | 27 août 1996 | | Method and apparatus for optically monitoring an electrical generator |
| US5550631 | 7 juin 1995 | 27 août 1996 | | Insulation doping system for monitoring the condition of electrical insulation |
| US5552880 | 7 juin 1995 | 3 sept. 1996 | | Optical radiation probe |
| US5764823 | 27 juin 1997 | 9 juin 1998 | | Optical switch for isolating multiple fiber optic strands |
| US5886783 | 27 juin 1997 | 23 mars 1999 | | Apparatus for isolating light signals from adjacent fiber optical strands |
