Process for obtaining a high-quality road tar with a strong adhesive capacity from the crude tar obtained during the distillation of solid mineral fuels
US1968746A
Preparing tar for use on roads
GB339640A
Preparing tar for use on roads
GB269090A
Improvements in fractional distillation
US1610078A
Apparatus for the heat treatment of materials
GB221528A
Improvements in the dehydration and distillation of tars or oils
GB218723A
Improvements in heating liquids by introduction into molten metal
GB215095A
Improvements relating to the removal of matter from the surface of a liquid, particularly in working apparatus for heat treatment by means of molten metal
GB176438A
Improvements relating to the process of heating substances for producing certain chemical changes
