More than two members

Full Title

Exposure-making shutters; Diaphragms > Shutters > Blade or disc rotating or pivoting about axis normal to its plane > More than two members

Classification Context

Section:

PHYSICS

Class:

PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY

Subclass:

APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR

Child Classifications

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• G03B 9/2 each moving in a single direction first to open and then to reclose
• G03B 9/22 each moving in one direction to open and then in opposite direction to close, e.g. iris type