| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 7 | |
| #2 | United States | 3 | |
| #3 | Austria | 2 | |
| #4 | Germany | 2 | |
| #5 | France | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Wing fittings | |
| #2 | Indexing scheme relating to hinges | |
| #3 | Doors and windows | |
| #4 | Hinges for doors or windows | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Erwin Kellerhals | 5 |
| #2 | Oswald Stamm | 3 |
| #3 | Bolli Hanspeter | 1 |
| #4 | Bolli Hans Peter | 1 |
| #5 | Hanspeter Bolli | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3645042A | Apparatus for opening a swing door | |
| US3404486A | Swinging doors and door leaves | |
| US3377748A | Swinging doors | |
| FR1478002A | Swing door | |
| FR1438833A | Swing door |