Improvements in or relating to road or advertising signs or the like
US1909220A
Plate and panel with inscriptions or designs
GB346718A
Improved apparatus for the manufacture of tubes, rods, blades, prisms, and the like of plastic materials having a nacreous, chatoyant or marbled appearance
US1865703A
Process for the manufacture of pearl essence
US1808372A
Process for the obtainment of sheets of plastic material which are combined or backed
US1700208A
Process and apparatus for production of a substance having a nacreous and chatoyant aspect
GB272199A
Process for the treatment of skins containing calcified formations
US1737943A
Process for the manufacture of substances having a decorative effect
GB272869A
Process for the manufacture of substances having a decorative effect
GB261771A
Improved process for the production of substances having a nacreous and chatoyant appearance
GB261772A
Improved process of manufacture of substances having a nacreous, pearly or chatoyant aspect and apparatus therefor
GB259249A
Process for the manufacture of sticks, canes and all suitable prismatic solid objects having a nacreous or metallic appearance, and devices for the said manufacture
GB251535A
Process for the obtainment of surfaces having a lustrous or metallic appearance
GB255803A
Improvements in methods for varnishing leather
US1742146A
Method for varnishing leather and like material
GB232625A
Improvements in supports for use in the manufacture of glass or enamel beads
US1586462A
Support serving as core for beads during their manufacture
US1760771A
Process for purifying pearl essence
US1546309A
Method of manufacture of artificial pearls and mother-of-pearl
GB222881A
Process of manufacture of products imitating pearls and mother-of-pearl without the use of pearl essence
