Magnetic information carrier
US4215812A · kind A · utility
8Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1979 |
| Grant date | Aug 5, 1980 |
| Priority date | — |
| Expiry date | Jan 18, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/082
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A magnetic information carrier comprising two magnetic tracks. One track contains coded magnetic information and the other track is deposited in depressions formed in the carrier and filled with a magnetic liquid, for displaying some of the coded magnetic information of the first track.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.