| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | France | 5 | |
| #3 | Switzerland | 1 | |
| #4 | Yugoslavia (Serbia and Montenegro) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Hinges for doors or windows | |
| #2 | Indexing scheme relating to hinges | |
| #3 | Bolts for doors or windows | |
| #4 | Wing fittings | |
| #5 | Locks |
| # | Name | Total Patents |
|---|---|---|
| #1 | Brueckner Rolf | 3 |
| #2 | Hammel Kurt | 2 |
| #3 | Buhr Hermann | 2 |
| #4 | Schneider Lutz | 1 |
| #5 | Hammel K | 1 |
| #6 | Schlinghoff Guenter | 1 |
| #7 | Kurt Hammel | 1 |
| #8 | Karl-Heinz Oberwinster | 1 |
| #9 | Helmut Bernotat | 1 |
| #10 | Bernotat Helmut | 1 |