| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 16 | |
| #2 | United Kingdom | 4 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Electrical machinery and energy | |
| #3 | Control | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Locks | |
| #2 | Electric switches | |
| #3 | Alarm systems | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Simon Futran | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB522385A | Improvements relating to locking systems | |
| US2045905A | Locking device for safety purposes | |
| GB437527A | Improvements in locking devices for safety purposes | |
| GB424120A | Improvements in locking devices for safety purposes | |
| GB364392A | Improvements in or relating to automatic burglar alarms |