|
GB191316011A
|
|
Electric-transformer Furnace.
|
|
GB191216041A
|
|
Improvements in Electric Retort Furnaces.
|
|
GB191216040A
|
|
Improvements in Induction Electric Furnaces.
|
|
GB191216042A
|
|
Improvements in Electric Boilers.
|
|
GB191216043A
|
|
Improvements in Electric Transformer Boilers.
|
|
US1040994A
|
|
Steam-boiler working as an electric transformer.
|
|
US1068558A
|
|
Electric furnace.
|
|
US1079588A
|
|
Electric retort-furnace.
|
|
CA138483A
|
|
Sleigh
|
|
CA138650A
|
|
Electric steam boiler
|
|
CA149569A
|
|
Electric furnace
|
