CPC Subgroup
G03B 21/58 collapsible, e.g. foldable; of variable area
Full Title
Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00) > Accessories > Projection screens > collapsible, e.g. foldable; of variable area
1 direct subcode
Child Classifications
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- G03B 21/585 Inflatable screens