Patent classifications
A
HUMAN NECESSITIES
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A63
SPORTS; GAMES; AMUSEMENTS
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A63H
TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
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A63H33/04
Building blocks, strips, or similar building parts
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A63H33/10
to be assembled by means of additional non-adhesive elements
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A63H33/101
with clip or snap mechanism
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