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. 10, 1978
Filed:
Nov. 07, 1977
Applicant:
Inventor:
Mitsuo Aihara, Tokyo, JP;
Assignee:
Tokyo Shibaura Electric Company, Ltd., Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G04B / ;
U.S. Cl.
CPC ...
364709 ; 58 5 / ; 5815 / ; 364705 ; 364710 ;
Abstract
An electronic calculator using a very small number of operative keys which comprises only four operative keys in all, that is, key for presetting a digit (0 to 9) of any order in a display section, the key for shifting the digit, the key for designating a specified mode from among a plurality of modes of calculating operation and the equal key for providing the result of calculating operation, wherein combination of these keys attains any desired type of function.
Quick Actions:
Aihara, Mitsuo. (1978). Electronic calculator (U.S. Patent No. 4120040). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4120040
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile