Partitioned information storage systems with controlled retrieval

D. Chaum (Inventor), N.T. Ferguson (Inventor), L.A.M. Schoenmakers (Inventor), E.W. Voskuil (Inventor)

Research output: PatentPatent publication

Original languageEnglish
Patent numberUS patent #5,956,400
Publication statusPublished - 21 Sep 1999

Cite this