Magnetic display apparatus
US5820385A · kind A · utility
40Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1996 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Jan 5, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43L1/008
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A magnetic display apparatus having a magnetic display sheet consisting of a plurality of microcapsules having oily liquid having photoabsorptive ferromagnetic powder and photoreflective non-magnetic powder, an apparatus for erasing with a magnet a line drawn on the display sheet by the magnetic pen, a magnet, a mechanism for moving the magnet along a major portion of the magnetic display sheet and a power source for moving the mechanism which supports the magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.