Electronic calculating apparatus and wallet enclosure
US4075702A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1976 |
| Grant date | Feb 21, 1978 |
| Priority date | — |
| Expiry date | Mar 12, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H13/84
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Several embodiments of an electronic calculating apparatus and wallet enclosure are described. The apparatus is provided with a side-located battery compartment for providing, in combination with the enclosure, a very convenient and useful, relatively thin assembly. The enclosure comprises two flap members. A first one of the flap members is adapted for supporting the apparatus. The other is adapted for folding over in facing relationship with the first. In each of the embodiments the first flap member is provided with an interior wall member. In one embodiment, the apparatus is separably inserted and supported in a pocket formed by the interior wall member. Keys which extend from the face of the apparatus for inserting numbers and the like project through keyholes provided in the interior wall member. In another embodiment, the apparatus is provided with engaging members which extend outwardly from the ends thereof. The members are provided for engaging corresponding slots in the interior wall member and supporting the apparatus from the exterior side thereof. In still another, and even more compact, embodiment, the first flap member is made a part of an electrical circuit in the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.