characterised by the nature of the surface

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Projectors or projection-type viewers; Accessories therefor > Accessories > Projection screens > characterised by the nature of the surface

CPC:

Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00) > Accessories > Projection screens > characterised by the nature of the surface

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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G03B 21/602 Lenticular screens (G03B21/625 takes precedence) since 2014 IPC+CPC Available in IPC and CPC
G03B 21/604 Polarised screens since 2014 IPC+CPC Available in IPC and CPC
G03B 21/606 for relief projection since 2014 IPC+CPC Available in IPC and CPC
G03B 21/608 Fluid screens since 2014 IPC+CPC Available in IPC and CPC
G03B 21/62 Translucent screens IPC+CPC Available in IPC and CPC