LandOfFree - US Patents - Listing for Electric lamp and discharge devices: systems,With cathode or cathode heater supply circuit

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Automatic cut-out or voltage regulator in the cathode or...

Ballast for a discharge lamp having a continuous-operation...

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Pulsating or a.c. supply to the cathode or heater circuit

Ballast for fluorescent lamp

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Delayed application of the discharge potential

Ballast scheme for a fluorescent lamp with preheated filaments

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Plural load device systems

Ballast structure for central high frequency dimming apparatus

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Pulsating or a.c. supply to the cathode or heater circuit

Ballast with efficient filament preheating and lamp fault...

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit

Ballast with filament heating control circuit

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Plural load device systems

Ballast with relamping circuitry

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Plural cathodes or heaters in the load device

Beam mode lamp with voltage modifying electrode

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Automatic cut-out or voltage regulator in the cathode or...

Brightness controlled CRT

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Discharge device and/or rectifier in the cathode or heater...

Built-in starter type fluorescent lamp socket

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Automatic cut-out or voltage regulator in the cathode or...

Cathode current control system

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Pulsating or a.c. supply to the cathode or heater circuit

Cathode heating apparatus for an electronic power tube

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Pulsating or a.c. supply to the cathode or heater circuit

Charged particle generating apparatus

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Pulsating or a.c. supply to the cathode or heater circuit

Charged particle generation with a resonant electrical circuit

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Pulsating or a.c. supply to the cathode or heater circuit

Circuit arrangement for electrode pre-heating of a fluorescent l

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Plural cathodes or heaters in the load device

Circuit arrangement for increasing the luminous flux in fluoresc

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Plural cathodes or heaters in the load device

Circuit arrangement for increasing the luminuous flux in fluores

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Automatic cut-out or voltage regulator in the cathode or...

Circuit arrangement for the operation of a fluorescent lamp

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Pulsating or a.c. supply to the cathode or heater circuit

Circuit for controlling current flow from an A.C. source to a lo