| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 3 | |
| #2 | Spain | 2 | |
| #3 | Netherlands | 2 | |
| #4 | Austria | 1 | |
| #5 | Belgium | 1 | |
| #6 | Canada | 1 | |
| #7 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Control |
| # | Technology | |
|---|---|---|
| #1 | Locks | |
| #2 | Alarm systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Errani Deo | 4 |
| #2 | Deo Errani | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA1034228A | Alarm device for signalling the undue opening of doors and closing-wings in general | |
| NL173782B | Keypad lock with intrusion protection device. | |
| DE1930739A1 | Two-cylinder lock with a common beard |