|
US1118899A
|
|
Manufacture of gases and gaseous atmospheres of non-oxidizing character.
|
|
US800127A
|
|
Apparatus for mining sulfur.
|
|
US1118275A
|
|
Process of and apparatus for rolling iron rods.
|
|
US799642A
|
|
Process of mining sulfur.
|
|
GB189617168A
|
|
Improvements in Mining Gold and similar Metals.
|
|
CA53576A
|
|
Mining gold and similar metals
|
|
CA51676A
|
|
Method of increasing the flow of oil wells
|
|
CA51123A
|
|
Process of purifying oil
|
|
CA53725A
|
|
Process od and apparatus for refining petroleum
|
|
CA37269A
|
|
Art of purifying petroleum
|
|
CA15960A
|
|
Improvements on petroleum stills
|
|
CA17358A
|
|
Method of, and apparatus for evaporating brines, etc.
|
|
CA37881A
|
|
Furnace for roasting, calcining and oxidizing metals and their compounds
|
|
CA19189A
|
|
Process and apparatus for the fractional distillation of hydro-carbon oils
|
|
CA15110A
|
|
Apparatus and process for the separation and treatment of oils
|
|
CA37268A
|
|
Art of purifying petroleum
|
|
CA37272A
|
|
Purification of petroleum
|
|
CA37271A
|
|
Composition for purifying canadian and similar petroleum
|
|
CA15111A
|
|
Apparatus and process for the separation and treatment of oils
|
|
CA27033A
|
|
Apparatus for and process of refining petroleum
|
