Picture pen
US4798016A · kind A · utility
7Cited by
12References
20Claims
0Family size
Inventors
Key dates
| Filing date | Apr 3, 1986 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Apr 3, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S40/905
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An assembly for removably accommodating an image medium including a generally cylindrical element and a transparent sleeve removably disposable over the cylindrical element. The transparent sleeve has an opening at one end for receiving the element and has an inner diameter slightly larger than the outer diameter of the element for defining a chamber to accommodate the image medium. There is also a device for removably securing the sleeve with the cylindrical element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.