Photographic easel system
US4150895A · kind A · utility
4Cited by
3References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1977 |
| Grant date | Apr 24, 1979 |
| Priority date | — |
| Expiry date | Jul 13, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/582
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In the disclosed easel system, a base supports a number of interchangeable facilities for engaging photographic material such as enlarging paper. These facilities may provide variable borders, fixed borders, hold the material for unbordered pictures, and secure the material for contact prints. Hinges hold the various facilities in a preparatory position when the material is being changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.