Patent · US Expired

Drug release valve for a parenteral administration system

USD314051S · kind S · design

4Cited by

6References

1Claims

0Family size

Assignee

Aktiebolaget Hassle · SE

Inventors

Bengt Berglund · Göteborg, SE
Nils B. Nilson · Mjölby, SE
Ake S. Nilsson · Göteborg, SE

Key dates

Filing date	Jan 7, 1987
Grant date	Jan 22, 1991
Priority date	—
Expiry date	Jan 22, 2005

Classification

Technology area (CPC —)General

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.