U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"

David Sarnoff, American radio pioneer ; 1921

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 315/303 - Control of the prime mover


Subclass of Class 315 - Electric lamp and discharge devices: systems
Definition: Systems, wherein the current or voltage is generated by
No. of patents: 3
Last issue date: 05/04/2004


NumberTitleIssue Date
6731072Light generator for a rotatable object
A light generator includes a generator housing, an axle, a magnet, a coil device, a lamp unit, and a resistance unit. The generator housing is adapted to be secured to a rotatable object for co-rotation therewith, and is formed with an axle hole. The axle is mounted...
05/04/2004
5604404Drive circuit for a cathode ray tube
A video signal is supplied from an emitter coupled differential amplifier to a first grid electrode of a cathode ray tube. A blanking pulse signal is supplied to the base of a transistor, which constitutes a constant-current source for the differential am...
02/18/1997
4146822Electrophotographic copier
In an electrophotographic copier a fusing station is provided at which a toner image previously formed on a copy carrier is fixed on the carrier by fusing. The fusing station includes a flash tube which, when discharged, produces the heat required for the...
03/27/1979
 
Sign InRegister
Username  
Password   
forgot password?