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. 19, 1979
Filed:
Feb. 09, 1976
Edward A Heinsen, Cupertino, CA (US);
Andre F Marion, Palo Alto, CA (US);
Thomas E Osborne, San Francisco, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
An apparatus is disclosed comprising an electronic wristwatch and a multifunction electronic calculator in a single wrist mountable case having a common display and keyboard. The watch portion of the watch/calculator includes time of day, calendar, stopwatch and alarm functions. Each of these functions can be controlled from the keyboard on the watch/calculator. The electronic calculator portion of the watch/calculator performs the four standard arithmetic functions: add, subtract, multiply and divide; and has an extra storage register. The calculator portion can perform calculations with scalar quantities entered via the keyboard or stored in the calculator as well as calculations with time interval and real time data from the watch portion. During the time that calculations are not being performed the calculator goes into a sleep or inactive mode in order to minimize the amount of battery power used by the watch/calculator.