Matches 451 - 500 out of 510 < 1 2 3 4 5 6 7 8 9 10 11 >
Match Document Document Title
2982881 Portable light source  
2975333 Operating circuit for high pressure arc lamps  
2973456 Lamp flasher with daylight-responsive inhibiting means  
2971126 Transistor inverter circuits  
2966614 Indicating device for electronic countering circuits  
2965803 Arc welding apparatus  
2960626 Starting control for d. c. saturation controlled arc welding apparatus  
2959710 Tuning indicator  
2957123 Constant current network level selector  
2956229 Voltage and polarity tester  
2956273 Combined electric lamp for illumination and signaling  
2955232 Circuit for unbalance detection apparatus  
2952798 Source of potential for photographic flash holder  
2949565 Direct current to alternating current inverter  
2945161 Circuit arrangement for the control of welding voltage  
2944191 Circuit system for electronic flash instruments with transistors  
2941119 Transistorized ignition system  
2935650 Photographic flash apparatus  
2931947 Method and device for electrically sterilizing and cleaning milking machines or the like  
2928988 Impulse counting and storing circuit  
2928994 Transistor inverters for feeding fluorescent tubes  
2928024 Combination light source with integral voltage converting means  
2924714 Electron accelerator  
2924750 Saturable core control means  
2923857 Power supply for electrical photographic flash unit  
2923858 Controller  
2923856 High frequency ballast unit  
2920240 Theater lighting control system  
2918607 Flasher control circuit  
2917663 Synchronizing and compensating circuit for headlight control system  
2909647 Wide range power supply system for welding equipment  
2907921 Voltage regulators  
2900571 Electrical gas discharge tube counting or distributing circuits  
2897404 Grid-controlled mercury-arc rectifier  
2895080 Pulse generator  
2892968 Voltage responsive screen control methods and systems  
2887620 Electronic control circuit useful in the manufacture of thick-and-thin yarn  
2880374 Arc welding machine  
2877383 Electrical pulse producing circuits  
2871412 Starting and operating circuit for arc-discharge device  
2866922 Commutator  
2866921 Arc machining  
2866132 Electrical gas discharge tube circuit  
2863097 Circuit arrangement for reducing the wear of gas discharge tubes  
2862103 Pulse generator  
2859384 Indicator system for series connected elements  
2856564 Barium titanate crystals as a portable source of electric power  
2856563 Starting circuit for lamps  
2850680 Regulated power supply  
2848653 Transistor gating circuit  
Matches 451 - 500 out of 510 < 1 2 3 4 5 6 7 8 9 10 11 >