The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 1992
Filed:
Jul. 01, 1991
Applicant:
Inventors:
Francis Chan, Fishkill, NY (US);
George J English, Poughkeepsie, NY (US);
Bijan Salimi, Saugerties, NY (US);
David R Weitzel, Poughkeepsie, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
307443 ; 307254 ; 307454 ; 307270 ;
Abstract
A bipolar push-pull driver in which the input transistor is biased so that it does not saturate and the base of its associated output transistor is pulled down to shut off compeletely by a transistor switch controlled by the complimentary output of the other input transistor.