Patent · US Expired

Circular speakerphone

USD536327S1 · kind S1 · design

25Cited by
9References
1Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 18, 2004
Grant dateFeb 6, 2007
Priority date
Expiry dateFeb 6, 2021

Classification

  • Technology area (CPC —)General

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