Patent · US Expired

Earphone

USD431553S · kind S · design

156Cited by
7References
1Claims
0Family size

Assignee

Inventor

Key dates

Filing dateSep 16, 1999
Grant dateOct 3, 2000
Priority date
Expiry dateOct 3, 2014

Classification

  • Technology area (CPC —)General

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