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:
Jun. 14, 1988
Filed:
Sep. 19, 1986
Tadashi Murase, Gifu, JP;
Nippon Colin, Co., Ltd, Aichi, JP;
Abstract
An electroacoustic transducer having a piezoelectric element disposed on a diaphragm for converting an acoustic signal to an electric signal, and a differential amplifier for amplifying the electric signal. The piezoelectric element is connected between one of two input lines connected to the differential amplifier, and a reference voltage source. A load having substantially the same impedance as the piezoelectric element is connected between the reference voltage source and the other input line. The load may consist of another piezoelectric element.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile