Retractable writing tool and self sealing valve
US7252449B2 · kind B2 · utility
9Cited by
4References
18Claims
0Family size
Inventor
Key dates
| Filing date | Feb 27, 2004 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Feb 27, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K24/084
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A capless retractable writing tool applicable to neutral and volatile writing fluids and capable of self sealing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.