| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 9 | |
| #2 | Germany | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Belgium | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Bolts for doors or windows | |
| #2 | Hinges for doors or windows | |
| #3 | Indexing scheme relating to hinges | |
| #4 | Doors and windows | |
| #5 | Wing fittings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bolzenkoetter Bruno | 2 |
| #2 | Hammel Kurt | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1175762A | A Locking Mechanism for Windows, Doors or other Structural Elements |