Cassette formed from a bendable material
US4969612A · kind A · utility
20Cited by
7References
15Claims
0Family size
Inventor
Key dates
| Filing date | Dec 4, 1989 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Dec 4, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/08785
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A cassette which includes top, bottom and side panels. The top, bottom, and side panels are made of a bendable material such as paperboard. Such cassettes may be produced at low cost and are especially useful in the mass mailing of promotional advertising.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.