Display for electronic calculator
US4247902A · kind A · utility
3Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1979 |
| Grant date | Jan 27, 1981 |
| Priority date | — |
| Expiry date | Mar 8, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65C2210/007
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device for use in electronic calculators capable of displaying determinants. The display device is able to display data of positions in row and in column of elements in a determinant together with numbers associated with the elements. The data of positions in row and column is displayed as selective segments of a figure "8" pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.