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. 20, 1978
Filed:
Oct. 20, 1976
Leon A Ferber, Woburn, MA (US);
Richard Pavelle, Woburn, MA (US);
Other;
Abstract
An electronic calculator structure comprised of a flexible printed circuit on a thin flexible dielectric material base to which are fixed a low profile solid state computing and driving elements, a readout register and a low profile flexible diaphram type number and function key structure large enough for finger operation, a P-70 Rayovac class thin battery, and an ON-OFF switch, all coupled together in manner to form a thin flexible calculator structure suitable for many end product uses such as being housed between two layers of thin flexible vinyl to form one side of a thin flexible folder, the other side of which carries a pad or business form such as check book or bank deposit and withdrawal recording form to create thereby a thin, flexible, light, folder type calculator for comfortable pocket storage and ready access for on-the-spot use to solve mathematical problems. In one embodiment the ON-OFF switch has an outwardly projecting member when in the ON position as an obstruction to closing the folder for storage until moved to the OFF position to prevent battery discharge during storage. The calculator structure is as thin as five thirty seconds of an inch, thereby sufficiently thin for incorporation as a separate page in a conventional note book or incorporation in a notebook cover for ready access in business, laboratory or class room.