CPC Subgroup
G03B 21/60 characterised by the nature of the surface
Full Title
Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00) > Accessories > Projection screens > characterised by the nature of the surface
5 direct subcodes
Child Classifications
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- G03B 21/602 Lenticular screens (G03B21/625 takes precedence)
- G03B 21/604 Polarised screens
- G03B 21/606 for relief projection
- G03B 21/608 Fluid screens
- G03B 21/62 Translucent screens