Patent · US Expired

Telephone key expansion unit

USD387063S · kind S · design

15Cited by
10References
1Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 15, 1995
Grant dateDec 2, 1997
Priority date
Expiry dateDec 2, 2011

Classification

  • Technology area (CPC —)General

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