TREA

each moving in one direction to open and then in opposite direction to close

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Industry

  • CPC
  • G03B9/22
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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 G03B9/00Exposure-making shutters Diaphragms

Current Industry

G03B9/22each moving in one direction to open and then in opposite direction to close
Industries