|
US864012A
|
|
Gas-filter.
|
|
GB190607538A
|
|
Improvements relating to Filters chiefly intended for use in connection with the Purification of Gas
|
|
GB190315948A
|
|
Improvements relating to Filters
|
|
GB190218131A
|
|
Improvements in and relating to Apparatus for Conveying or Transporting Incandescent Coke from Gasworks Retorts
|
|
GB190124579A
|
|
Improvements in or relating to Apparatus for Conveying or Transporting Hot Coke, or for other like Uses.
|
|
GB189322576A
|
|
Improvements in Apparatus for Washing and Purifying Gas.
|
|
CA304146A
|
|
Apparatus for the distillation or heat treatment of carbonaceous materials
|
