Patent · US Expired

Proximity interface for transaction acceptance systems

USD490840S1 · kind S1 · design

73Cited by
5References
1Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 30, 2002
Grant dateJun 1, 2004
Priority date
Expiry dateJun 1, 2018

Classification

  • Technology area (CPC —)General

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