|
GB9724120D0
|
|
Discharge lamps
|
|
GB9219876D0
|
|
Cathode
|
|
GB9024554D0
|
|
Radiation source
|
|
GB9022272D0
|
|
Lamp
|
|
GB9017707D0
|
|
Gas discharge display device
|
|
GB8918423D0
|
|
Gas discharge display
|
|
GB8905213D0
|
|
Lamps
|
|
GB916030A
|
|
Improvements in or relating to impact-operable electric alarm switch devices
|
|
GB770107A
|
|
Improvements in glass-to-metal seals
|
|
GB804911A
|
|
Improvements in or relating to photo-conductive pick-up tubes
|
|
GB755015A
|
|
Improvements in television pick-up tubes and transmitting apparatus incorporating the same
|
|
GB749058A
|
|
Improvements in or relating to television pick-up tubes
|
|
GB716504A
|
|
Improvements in or relating to impact-operable electric alarm switch devices
|
|
GB738077A
|
|
Electron discharge devices
|
|
US2651687A
|
|
Alarm switch device
|
|
US2667600A
|
|
Television pickup tube
|
|
GB712432A
|
|
Generator for television and like waveforms
|
|
GB713858A
|
|
Improvements in or relating to television pick-up tubes
|
|
DE908741C
|
|
Television recording device
|
|
DE885567C
|
|
Processes and circuits for amplifying electrical currents
|
