Magnetic sheet the magnetic attraction of which is strengthened
US4058335A · kind A · utility
30Cited by
5References
8Claims
0Family size
Inventor
Key dates
| Filing date | Jan 27, 1976 |
| Grant date | Nov 15, 1977 |
| Priority date | — |
| Expiry date | Jan 27, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/11
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
This invention relates to a means for strengthening the power of the magnetic attraction of a magnetic sheet, having a certain but weak magnetic attraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.