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:
Nov. 30, 1976
Filed:
Jan. 09, 1974
Charles H Wilson, Minneapolis, MN (US);
Other;
Abstract
Apparatus and method for providing a standard telephone with localized calculating and read-out capabilities. Miniaturized electronic calculator circuits are integrally mounted within a standard telephone chassis and operatively share use of the telephone keyboard selector buttons with the existing telephone circuits. Input stimuli applied to the push-button selector keys are simultaneously converted into touch-tone dialing information for the telephone circuits and into digital information for the calculator circuits. A plurality of calculator function input keys supplement the shared standard telephone keyboard and provide function information input capability to the calculator circuits. Easily operated switches enable either independent or simultaneous use of the telephone and/or the calculator circuits. A numerical display panel mounted on the face of the telephone chassis provides visual read-out capability for the calculator and for entered telephone numbers.