| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 1 | |
| #2 | Switzerland | 1 | |
| #3 | Czechoslovakia | 1 | |
| #4 | German Democratic Republic | 1 | |
| #5 | Denmark | 1 | |
| #6 | France | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | Hungary | 1 | |
| #9 | Netherlands | 1 | |
| #10 | Poland | 1 | |
| #11 | Sweden | 1 | |
| #12 | Yugoslavia (Serbia and Montenegro) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Indexing scheme relating to hinges | |
| #2 | Hinges for doors or windows | |
| #3 | Doors and windows | |
| #4 | Office furniture |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ruhkopf Bernd | 5 |
| #2 | Ruhkopf B | 2 |
| #3 | Ruhkope B | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB2060747A | Door for a cupboard |