G03B21/44 - CPC Classification Index

ClassID:

175940 ⎘

G03B21/44 - CPC Classification

Classification description:

Projectors or projection-type viewers; Accessories therefor; Details; Details specially adapted for motion-picture projection; Driving mechanisms Mechanisms transmitting motion to film-strip feed; Mechanical linking of shutter and intermittent feed

Sub-classes:

G03B21/46 » affording adjustment for framing 3
G03B21/48 » for altering frame speed; for regulating constancy of film speed 1

Recent Application in this class:

20210191240

2021-06-24

Projector

20200278600

2020-09-03

Projection optical system, projection-type image display device, and imaging device

18117881

2026-05-05

Projector assembly