| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 2 | |
| #2 | Switzerland | 2 | |
| #3 | Spain | 2 | |
| #4 | France | 2 | |
| #5 | United Kingdom | 2 | |
| #6 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Electromechanical clocks |
| # | Name | Total Patents |
|---|---|---|
| #1 | Carruthers Joseph Alexander | 6 |
| #2 | Joseph Alexander Carruthers | 2 |
| #3 | Alexander Carruthers Joseph | 2 |
| Publication | Filing date | Title |
|---|---|---|
| CA81535A | Electrical clock, etc. | |
| CA81536A | Electrical clock | |
| US731280A | Electric clock. | |
| US731279A | Electric clock. | |
| GB190221471A | Electrically Actuated and Controlled Clock | |
| GB190221470A | Improvements in Elecrically Actuated and Controlled Clocks and other Time Recording Apparatus |