Magnetic tape cassette
US4349166A · kind A · utility
6Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1980 |
| Grant date | Sep 14, 1982 |
| Priority date | — |
| Expiry date | Jun 30, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/08785
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic tape cassette comprises an upper half casing and a lower half casing provided with a screw holder having a threaded hole at the corner of the lower half casing for connecting said upper half casing, wherein the thickness of the wall of the screw holder facing inside the casing is reduced and at least one rib having a level flush with the fitting surface of the lower half casing is formed at the inside portion of the screw holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.