Patent · US Expired

Microphone for flat surfaces

USD428406S · kind S · design

4Cited by
5References
1Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 22, 1999
Grant dateJul 18, 2000
Priority date
Expiry dateJul 18, 2014

Classification

  • Technology area (CPC —)General

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