Bent wire spring module
US4796872A · kind A · utility
3Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1987 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | Jul 13, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C27/066
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A bent wire spring module provided with spirally-formed attaching elements at its upper end for interengagement with the border wires of a grid frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.