DIR coupler that forms colorless reaction product

Direct positive emulsions containing fogged, monodispersed silve

Direct-positive photographic emulsion containing, unfogged, mono

Direct-positive process utilizing a supersensitized silver halid

Direct-positive silver halide emulsion fogged to low level and t

Direct-positive silver halide emulsions

Disc-type air filters

Discharge gas purification system

Dispersing polymeric particles in aqueous medium for coating sil

Dry copying material

Dry stabilization of a silver halide photographic material

Dual-filter electrically enhanced air-filtration apparatus...

Dust collecting apparatus and air-conditioning apparatus

Dust collecting apparatus for an air conditioner

Dust collection device for sanding tool

Dust collector

Dust collector

Dust-collecting electrode and dust collector

Dye developer for diffusion transfer elements

Dye developer transfer photosensitive material with substituted