Silent communicator
US4303915A · kind A · utility
10Cited by
9References
9Claims
0Family size
Inventors
Key dates
| Filing date | Jul 11, 1979 |
| Grant date | Dec 1, 1981 |
| Priority date | — |
| Expiry date | Jul 11, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B21/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A portable hand held, electronic alphanumeric display device for assisting individuals to communicate with one another comprising a keyboard with function switches; a display section and assorted logic and power circuitry to sequentially display a worded message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.