| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 8 | |
| #2 | France | 7 | |
| #3 | Switzerland | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Locks | |
| #2 | Doors and windows | |
| #3 | Turning | |
| #4 | Vehicle windows, roofs and doors |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sievers Carl | 3 |
| #2 | Boeving Egon | 2 |
| #3 | Beckershoff Otto | 1 |
| #4 | Carl Sievers | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB352093A | Improvements in and relating to revolving barrel mortise locks |