Patent · US Expired

Air purifier

USD402745S · kind S · design

60Cited by
4References
1Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 17, 1997
Grant dateDec 15, 1998
Priority date
Expiry dateDec 15, 2012

Classification

  • Technology area (CPC —)General

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