Patent · US Expired

Infrared heating unit

USD322676S · kind S · design

17Cited by
5References
1Claims
0Family size

Inventor

Key dates

Filing dateMay 22, 1989
Grant dateDec 24, 1991
Priority date
Expiry dateDec 24, 2005

Classification

  • Technology area (CPC —)General

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