Collapsible playpen
US4008499A · kind A · utility
25Cited by
2References
10Claims
0Family size
Inventors
Key dates
| Filing date | Dec 3, 1975 |
| Grant date | Feb 22, 1977 |
| Priority date | — |
| Expiry date | Dec 3, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47D13/063
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A playpen which can be collapsed to a substantially cylindrical shape to increase its ease of portability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.