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. 16, 1979
Filed:
Jan. 18, 1977
Applicant:
Inventor:
Reiji Hirano, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
364900 ; 364709 ;
Abstract
In an electronic computer of the type having a keyboard having numeral keys and data instruction keys and storage means for storing data entered by the keyboard, a clear key is provided which, upon depression, initiates the operation for clearing only the data stored in the storage means after the depression of the data instruction key when the clear key is depressed immediately after the entry of data or for clearing all the data so far stored in the storage means when the clear key is depressed immediately after the depression of the data instruction key. Upon depression of the clear key, the data only in specified digits in storage means may be cleared or erased.