Patent · US Expired

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USD250500S · kind S · design

4Cited by
3References
1Claims
0Family size

Inventor

Key dates

Filing dateSep 20, 1976
Grant dateDec 12, 1978
Priority date
Expiry dateDec 12, 1992

Classification

  • Technology area (CPC —)General

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