G
PHYSICS
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G06
COMPUTING OR CALCULATING; COUNTING
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G06F
ELECTRIC DIGITAL DATA PROCESSING
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21/00
Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
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G06F21/10
Protecting distributed programs or content, e.g. vending or licensing of copyrighted material; ; ; Digital rights management [DRM]
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G06F21/107
License processing; Key processing
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