CPC Subgroup
G03B 21/005 Full Title
Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00)
2 direct subcodes
Child Classifications
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G03B 21/005 Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00)
2 direct subcodes
Navigate with arrow keys, Enter to open