Transponder system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 23, 1994
Grant Date -
N/A
app pub date -
Jan 25, 1993
filing date -
Jun 14, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A transponder system comprising an interrogating source of HF electromagnetic radiation, and a plurality of transponders which each include a token reader unit to receive a removable token, e.g., a smart card, including onboard data processing capability. The transponders, or a group of transponders, are each arranged when interrogated to transmit a unique HF response modulated by information taken upon the token.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully