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:
Jan. 11, 1983
Filed:
Jul. 15, 1981
Applicant:
Inventor:
Shozo Ishiyama, Tokyo, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
G06C / ; G09B / ;
U.S. Cl.
CPC ...
235 / ; 235 / ; 235116 ; 434206 ;
Abstract
A numeral adding toy including an arrangement for rotationally indexing in a cooperative manner two rotary wheels displaying numerals to be added and a single rotary wheel displaying the added sum answer by means of a rotationally indexing mechanism including pins or ratchets. The wheel displaying the added answer is rotated the summed number of indexes of the two wheels displaying the numerals to be added. The wheels, having been rotationally indexed, are rotationally returned by means of a releasing mechanism.
Quick Actions:
Ishiyama, Shozo. (1983). Numeral adding toy (U.S. Patent No. 4368381). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4368381
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile