|
GB331673A
|
|
Improvements in rotary furnaces more particularly adapted for low temperature distillation
|
|
GB311775A
|
|
Process for the continuous gasification of granular or pulverulent material, such as pit coal, brown coal, coke or the like
|
|
GB293430A
|
|
Improved process for distilling, cracking and hydrogenating oils, tars and the like
|
|
GB267505A
|
|
Improvements in or relating to low temperature carbonisation
|
|
GB286404A
|
|
Improvements relating to the distillation of carbonaceous or bituminous substances
|
|
US1811544A
|
|
Retort oven
|
|
CA297096A
|
|
Illuminating or heating gas
|
|
CA287356A
|
|
Carbon and bituminous distillation process
|
