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:
Dec. 18, 1979
Filed:
Jan. 03, 1978
Applicant:
Inventors:
Hirohiko Yoshida, Hoya, JP;
Fumio Nakajima, Tokyo, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
3311 / ; 3072 / ; 307304 ; 331158 ; 331179 ;
Abstract
A piezo-electric oscillator composed of a quartz crystal, an inverting amplifier connected across the quartz crystal, an output capacitor connected to an output side of the quartz crystal, and a plurality of input capacitors. The input capacitors are selectively coupled to the input side of the quartz crystal by means of an electronic switching means by which an output frequency of the quartz crystal is adjusted to a prescribed value.
Yoshida, Hirohiko. (1979). Capacitor switching circuits for adjusting crystal oscillator frequency (U.S. Patent No. 4179671). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4179671
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile