Collapsible sofa bed mattress
US5551104A · kind A · utility
17Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 29, 1995 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Mar 29, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C17/22
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A mattress of a sofa bed contains a portion which is collapsible and portions which are conventional and non-collapsible. The collapsible and non-collapsible portions are hinged to fold within a sofa bed frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.