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DOCUSYSTEMS INC
US4 patents
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US5879784AMar 9, 1999
Tickets with extruded security stripe and method of making same
DOCUSYSTEMS INC25 citations91
USRE35599ESep 2, 1997
Method and apparatus for enhancing a randomly varying security characteristic
DOCUSYSTEMS INC18 citations90
US5647003AJul 8, 1997
Method and apparatus for altering a magnetic characteristic of a medium
DOCUSYSTEMS INC18 citations82
US5843864ADec 1, 1998
Non-smudging thermally imageable documents, method of making same and system for reducing the smudging of ink stamp pad images applied to such documents
DOCUSYSTEMS INC17 citations70