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GB244782A
|
|
Manufacture of azo-dyestuffs
|
|
GB243023A
|
|
Improvements in or relating to photographic copying
|
|
GB245078A
|
|
Process for decolorising solutions of cellulose derivatives
|
|
GB244068A
|
|
Insulating high tension electric currents
|
|
GB242974A
|
|
Manufacture of colourless compounds containing sulphur and suitable for adsorption on textile fibres and other substrata
|
|
GB253065A
|
|
Improved insecticide
|
|
GB245065A
|
|
Improvements relating to photographic films
|
|
GB262537A
|
|
Process for producing fast dyeings on the fibre
|
|
GB249467A
|
|
Improvements relating to copying drawings, printed matter and the like by photography
|
|
US1594697A
|
|
Manufacture of sulphocyano derivatives
|
|
GB245061A
|
|
Improvements relating to collotype printing
|
|
GB237594A
|
|
Manufacture of ortho-oxyazo-dyestuffs and intermediate products thereof
|
|
US1565691A
|
|
Electrode for use in the contact process of making sulphuric acid
|
|
GB240411A
|
|
Improved process for soldering aluminium
|
|
GB235556A
|
|
Improved manufacture of sulphur dyestuffs
|
|
US1592513A
|
|
Film pack
|
|
GB247800A
|
|
An improved photographic film pack
|
|
US1556329A
|
|
New ortho-hydroxyazo dye
|
|
US1589688A
|
|
Photographic film
|
|
GB236525A
|
|
An improvement in the dyeing of jute fibre, cocoanut fibre and the like
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