Method of making an electronic calculator
US4118858A · kind A · utility
7Cited by
11References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1977 |
| Grant date | Oct 10, 1978 |
| Priority date | — |
| Expiry date | Mar 11, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49133
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Electronic calculators are manufactured by affixing conductors on an insulated substrate, by attaching a semiconductor logic and a tape-mounted display device to selected conductors and by interconnecting the conductors with a keyboard. The tape-mounted display device is provided with a plurality of leads carried by the tape different preselected distances from an axis of the display device. By using the method disclosed, the number of holes provided in the insulated substrate can be reduced or the use of such holes eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.