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:
May. 10, 1988
Filed:
Jun. 20, 1986
Howard H Stover, Pasadena, CA (US);
Kenneth E Alexander, Villa Park, CA (US);
Fred P Alexander, Stateline, NV (US);
Electronic Teacher's Aids, Inc., Orange, CA (US);
Abstract
The specification discloses a hand-held calculator particularly adapted for dimensional or measurement calculations. The calculator includes keys for indicating a different dimension system (e.g. feet, yards, meters) associated with each number inputted, enabling calculations to be performed on numbers from mixed dimension systems. All inputted measurements are converted to decimal feet internally to simplify calculations and simplify conversion structure and routines. Preferably, a dimension power (e.g. square or cubic) can also be associated with each input number as necessary; and the calculator calculates and displays the proper dimension power resulting from any calculation. Further preferably, the calculator includes a keyboard enabling lumber dimensions to be easily inputted for board feet calculations.