TREA

Devices for changing pictures in viewing apparatus or projectors

Follow

Industry

  • CPC
  • G03B23/00
This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

GPHYSICS G03Photography G03BAPPARATUS 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

Current Industry

G03B23/00Devices for changing pictures in viewing apparatus or projectors

Sub Industries

G03B23/02in which a picture is removed from a stock and returned to the same stock or another one Magazines therefor G03B23/04with linear movement G03B23/042whereby the picture is not returned to the same stock after projection G03B23/044whereby the picture is returned to the same stock G03B23/046Picture changing devices G03B23/048with horizontally sliding mechanism G03B23/06with rotary movement G03B23/08in which pictures are attached to a movable carrier G03B23/10drum or disc carrier G03B23/105disc carriers G03B23/12linear strip carrier G03B23/125the pictures being attached to a chain or linked up to form a chain G03B23/14Carriers operable to move pictures into, and out of, the projection or viewing position and carrying one or two pictures only in a removable manner also other devices not provided with a stock G03B23/18with fade-in and fade-out effects
Industries

Patents Grantslast 30 patents

Patents Applicationslast 30 patents