Heat-developable photosensitive materials

Homopolymerization inhibition of photographic hardeners

Hydrocarbon adsorbent state determining apparatus

Hydrogen storage unit

Linear gas valve cycle control, shut-off-valve and self test

Method and materials for thermoplastic recording

Method for the preparation of a photothermographic system

Method of preparing silver halide grains of improved photographi

Modular air supply

Moisture absorption device for electrical apparatus containing d

Moisture separation heater

N(.beta.-chloro-propionyl or acryloyl)carbamyl or ureido piperaz

Novel spiro-heterocyclic compounds, their preparation, and use t

Organotellurium (II) and (IV) compounds in heat-developable phot

Oxygen concentrating apparatus

Oxygen concentrator

Oxygen enriched air system

Particulate separation system for mercury analysis

Photographic gelatine layers with improved physical and photogra

Photographic light-sensitive and heat developable material