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

Icon_funbox Bizarre Patents

Patent No. 6049912

Mountable Printable Placard With Headband

A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.

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 331/148 - With 3 or more winding feedback transformers


Subclass of Class 331 - Oscillators
Definition: Subject matter wherein the closely coupled transformer includes
No. of patents: 1
Last issue date: 10/14/1986


NumberTitleIssue Date
4617533Circuit arrangement for a blocking oscillator switching power unit
A blocking oscillator contains a switching transistor which is driven by an integrated circuit. This circuit receives its supply voltage during the blocking phase from a winding at the primary side. A further winding at the primary side supplies the regul... 		10/14/1986
 
Sign InRegister
Username  
Password   
forgot password?