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Patents Grants
last 30 patents
Information
Patent Grant
Turning blocking device
Patent number
6,170,194
Issue date
Jan 9, 2001
Skidata Computer (yesellschaft m.b.H.)
Wolfram Kocznar
G07 - CHECKING-DEVICES
Information
Patent Grant
Method of forgery-protecting a data carrier, a forgery-protected da...
Patent number
4,929,821
Issue date
May 29, 1990
Skidata Computer G.m.b.H.
Wolfram Kocznar
G06 - COMPUTING CALCULATING COUNTING