Patent classifications
G
PHYSICS
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G06
COMPUTING OR CALCULATING; COUNTING
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G06F
ELECTRIC DIGITAL DATA PROCESSING
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2203/00
Indexing scheme relating to G06F3/00 - G06F3/048
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G06F2203/048
Indexing scheme relating to G06F3/048
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G06F2203/04809
Textured surface identifying touch areas, e.g. overlay structure for a virtual keyboard
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