| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 7 | |
| #2 | Switzerland | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | Austria | 2 | |
| #5 | France | 2 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Electrical machinery and energy | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Time-interval measuring | |
| #2 | Electric switches | |
| #3 | Unspecified technologies | |
| #4 | Electromechanical clocks | |
| #5 | Distribution of electric power |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schleicher Helmut | 9 |
| #2 | Helmut Schleicher | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB1274566A | Time-delay relay | |
| GB1055388A | Improvements in and relating to mechanical timing devices | |
| GB890163A | An electrical delay device |