Patent classifications
G
PHYSICS
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G09
EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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G09F
DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
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23/00
Advertising on or in specific articles, e.g. ashtrays, letter-boxes
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G09F23/0066
on sports articles, e.g. golf clubs
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