US2728884A
|
|
Textile machine
|
US2655343A
|
|
Drilling device
|
US2632140A
|
|
Speed control of machines
|
US2686288A
|
|
Regulating device for electric machines
|
US2590120A
|
|
Speed control system
|
US2660701A
|
|
Speed control of electric machines
|
US2527070A
|
|
Generator frequency control system
|
US2610316A
|
|
Amplifying dynamoelectric machine of the metadyne type
|
US2703345A
|
|
System of supply of electric power at constant intensity
|
US2501477A
|
|
Electrical power transmission system
|
US2648039A
|
|
Power system for a plurality of motors
|
US2575637A
|
|
Direct-current power system
|
US2596431A
|
|
Direct-current rotary transformer
|
US2587648A
|
|
Electric power system
|
US2593483A
|
|
Electric power system
|
US2590887A
|
|
Transformer metadyne
|
US2658177A
|
|
Speed responsive electrical device
|
US2484246A
|
|
Fluorescent lamp fed by direct current
|
US2551459A
|
|
Train lighting set
|
US2599936A
|
|
Metadyne motor
|