| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 5 | |
| #2 | United Kingdom | 4 | |
| #3 | United States | 2 | |
| #4 | Belgium | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Electrically-conductive connections | |
| #2 | Dynamo-electric machines | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Edgerton Douglas Arthur | 4 |
| #2 | Company Limited Watliff | 3 |
| #3 | William Eli Arnold | 2 |
| #4 | Edgerton Douglas A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB9720636D0 | A plug in commutator, a plug in segment for making a plug in commutator and a hub body for making a plug in commutator | |
| GB9206637D0 | Armature | |
| GB1525972A | Commutators | |
| GB1447340A | Slip ring units method of making the same and conductor construction therefor |