Photographic element comprising a fogged, direct-positive hetero

Photographic emulsion containing unfogged, heterodisperse layere

Photographic light-sensitive material

Photographic light-sensitive material

Photographic light-sensitive material

Photographic light-sensitive material containing liquid organopo

Photographic materials with ballasted, alkali cleavable azo dyes

Photographic multilayer direct-positive silver halide element

Photographic products comprising embossed supports

Photographic uses of polyvinyl-phenylmercapto-tetrazoles

Photographic uses of polyvinylphenylmercapto-tetrazole:multivale

Photography utilizing micro-capsular materials

Photosensitive copolymer on silicon support

Photosensitive elements containing chromophore-substituted vinyl

Photothermographic material, composition and process

Plasma air dust collector

Pleated filter

Polymeric quaternary dye image receiving layers with overcoat

Portable air filter system

Portable air filtration system