Multiple picture frame
US4070780A · kind A · utility
10Cited by
6References
10Claims
0Family size
Inventor
Key dates
| Filing date | Oct 26, 1976 |
| Grant date | Jan 31, 1978 |
| Priority date | — |
| Expiry date | Oct 26, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F1/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
First and second sets of U-shaped border members are connected to a common central border member at offset locations to define at least two picture openings offset from one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.