Improved means for mixing the colour element images in multi-colour screen photographic printing and projection
GB371867A
Improvements in colour photography
GB371477A
Improvements in colour photography
GB346010A
Improvements in or relating to colour photography
GB339651A
Improvements in or relating to the projection of pictures in colour
GB327200A
Improvements in/or relating to colour photography
GB326569A
Improvements in or relating to cinematograph films having associated therewith a sound record
GB324989A
Improvements in or relating to means for taking and projecting pictures in colour for use in colour cinematography, still photography or photomicrography
GB319195A
Improvements in or relating to the taking of colour photographs for use in cinematography
GB319194A
Improvements in or relating to cinematographic colour projecting apparatus
GB203643A
Improvements in fine adjustments of microscopes
GB214485A
Dry or immersion non-achromatic condenser which is aplanatic for any given wave length of light
GB215979A
A combined microscope objective and illuminator for examining and illuminating an object from the same side
GB195109A
Improvements in or relating to pistons and piston rods
