IP Library › Granted Patent US 4,926,480
Granted Patent Utility
US 4,926,480 · App. 07/198,315

Card-computer moderated systems

Inventor: David Chaum
Patented Case View Patent ↗
Granted: May 15, 1990 Filed: May 24, 1988
Inventor
David Chaum

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Quick Facts
Patent No.
US 4,926,480
App. No.
07/198,315
Filed
1988-05-24
Granted
1990-05-15
Kind
A