| GB191018306A                (en) |  | Improvements in and relating to Means for Controlling Dynamo Electric Machines. | 
| US1212476A                (en) |  | Dynamo. | 
| US3535052A                (en) |  | Electrically driven vacuum pump | 
| US1491441A                (en) |  | High-speed alternating-current dynamo-electric machine | 
| US2289241A                (en) |  | Electrodynamic control system | 
| US1474944A                (en) |  | Distant indicating means | 
| GB191102867A                (en) |  | Improvements in Dynamo-electric Machinery. | 
| GB191206099A                (en) |  | Improvements in Dynamo Electric Machines. | 
| US1059771A                (en) |  | System of control for induction-motors. | 
| GB191026119A                (en) |  | Improvements in and relating to Polyphase Electric Commutator Motors. | 
| US1238290A                (en) |  | Universal motor. | 
| US1304181A                (en) |  | Henry | 
| US20120212091A1                (en) |  | Electric machine | 
| GB293021A                (en) |  | Improvements in compensated asynchronous electric motors | 
| US933399A                (en) |  | Dynamo-electric machine. | 
| US1277415A                (en) |  | Control system. | 
| US1222539A                (en) |  | Electric motor system. | 
| GB920560A                (en) |  | A double rotary induction regulator of alternating-current commutator motors | 
| GB191023174A                (en) |  | Improvements in and relating to Synchronous Electric Motors. | 
| GB565850A                (en) |  | Improvements in or relating to electrically operated differential mechanism | 
| GB190912917A                (en) |  | Improvements relating to Means Employed for Controlling the Speed of Bodies Driven by Alternating Current Electric Motors. | 
| GB191017731A                (en) |  | Improved Arrangements for Controlling the Speed of Induction Electric Motors. | 
| GB191401640A                (en) |  | Improvements in or relating to Arrangements for Regulating the Torque of Polyphase Electric Motors. | 
| GB1204412A                (en) |  | Improvements relating to rotary machines | 
| GB190929376A                (en) |  | Improvements relating to Dynamo-electric Machines. |