| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 5 | |
| #2 | France | 4 | |
| #3 | Germany | 2 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Telecommunications | |
| #3 | Control | |
| #4 | Measurement |
| # | Name | Total Patents |
|---|---|---|
| #1 | Harper Walter | 1 |
| #2 | Levine Bernard | 1 |
| #3 | Russell-Jones Donald | 1 |
| #4 | Brod Martin Milton | 1 |
| #5 | Harris Aaron W | 1 |
| #6 | Hamilton Ralph Frederic Gilber | 1 |
| #7 | Harris Aaron Meyer | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB847558A | Selsyn device | |
| GB827269A | Method of making induction-motor squirrel cages | |
| GB860120A | Improvements in or relating to electrical synchronising devices | |
| GB831646A | Improvements in or relating to the arrangement of slip rings on the rotor of an electrical machine |