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:
Nov. 23, 1976
Filed:
Aug. 18, 1975
Applicant:
Inventors:
Francis W Hopwood, Severna Park, MD (US);
Lester K Staley, Baltimore, MD (US);
Thomas R Turlington, Linthicum, MD (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ; H03B / ; H03B / ; H03B / ;
U.S. Cl.
CPC ...
331 18 ; 331 30 ; 331 76 ; 3311 / ; 331139 ; 331158 ; 331172 ;
Abstract
A low noise frequency source utilizes a varactor diode to form a parametric crystal oscillator which may be frequency multiplied to the desired microwave frequency, for radar applications.
Hopwood, Francis. (1976). Low noise parametric varactor diode crystal oscillator (U.S. Patent No. 3993962). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3993962
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile