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. 19, 1977
Filed:
Nov. 14, 1973
Kiyomi Abe, Noda, JA;
Genichi Tagata, Hamamatsu, JA;
Pentel Kabushiki Kaisha, , JA;
Abstract
A response analyzing device comprises a discriminating device and a plurality of answering devices connected in parallel to a plurality of lines extending from the discriminating device. Each of the answering devices are provided with resonance circuits having mutually different resonance frequencies and a selective switch for connecting the resonance circuits with these lines. The discriminating device is provided with a sweep oscillator for impressing outputs to these lines and has a variable range which permits the sweeping of the entire range of the resonance frequencies and circuitry for detecting the variation in impedance due to the resonance phenomenon created in the resonance circuit.