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:
Apr. 24, 1984
Filed:
Apr. 11, 1983
Applicant:
Inventor:
Ichiro Sado, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06C / ;
U.S. Cl.
CPC ...
235430 ; 235379 ;
Abstract
An electronic apparatus is disclosed which comprises numeral input keys, plural unit input keys, a device for judging whether a combination of actuations of the numeral input keys and the unit input keys has a meaning as a figure, a device of forbidding the entry of the key signals of said combination in case said combination does not represent a meaning as a figure, and a device for generating an alarm signal simultaneously with the forbidding of said key signal entry.