TREA

with paired lenses, one of which forms image on photographic material and the other forms a corresponding image on a focusing screen

Follow

Industry

  • CPC
  • G03B19/14
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 G03B19/00Cameras

Current Industry

G03B19/14with paired lenses, one of which forms image on photographic material and the other forms a corresponding image on a focusing screen
Industries