TREA

Measuring or indicating length of the used or unused film Counting number of exposures

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Industry

  • CPC
  • G03B1/60
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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 G03B1/00Film strip handling

Current Industry

G03B1/60Measuring or indicating length of the used or unused film Counting number of exposures
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