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Inventor
SAMSON PETER R
US
3 patents
Patents
3 patents
US5287408A
Feb 15, 1994
Apparatus and method for serializing and validating copies of computer software
AUTODESK INC
323 citations
94
US7526733B1
Apr 28, 2009
Visual watermark
AUTODESK INC
10 citations
79
US5557459A
Sep 17, 1996
Optical convergence accommodation assembly
AUTODESK INC
7 citations
69