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:
Jun. 27, 1989
Filed:
May. 29, 1986
Applicant:
Inventors:
Susan L Wechsler, Corvallis, OR (US);
Eric A Evett, Corvallis, OR (US);
Pamela F Raby, Corvallis, OR (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
364900 ; 3649200 ; 36492766 ;
Abstract
A calculating device is presented which displays a stack containing values most recently calculated and utilized, in accordance with the preferred embodiment of the present invention. The calculating device also displays a label for each value. When a new valve is added to the stack, the stack labels are searched to see if there is a value on the stack having the same label. If so the duplicate value and its label are removed from the stack.
Wechsler, Susan. (1989). History stack (U.S. Patent No. 4843590). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4843590
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