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:
Oct. 24, 1978
Filed:
Mar. 07, 1977
Applicant:
Inventors:
Chisaburo Kimoto, Tokyo, JP;
Katsuhiko Itasaka, Tokyo, JP;
Ryu Tanaka, Tokyo, JP;
Yoshinobu Kimura, Tokyo, JP;
Assignee:
Gakken Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09B / ;
U.S. Cl.
CPC ...
35 / ; 35 / ; 35 3 / ;
Abstract
A learning device includes a learning sheet having for each question a set of answers, only one of which is the correct answer. The sheet is mounted on a base plate having a series of conducting bands which are tortuous or undulating so that the correct answers corresponding to the appropriate associated conducting bands will not be arranged in a straight line nor made obvious to the person using the learning device.
Kimoto, Chisaburo. (1978). Learning device (U.S. Patent No. 4121355). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4121355
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile