| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 12 | |
| #2 | Switzerland | 2 | |
| #3 | Germany | 1 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Civil engineering | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Elevators and escalators | |
| #2 | Wing fittings | |
| #3 | Indexing scheme relating to hinges | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ascenseurs Edoux-Samain | 2 |
| #2 | Henri Roche | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2621925A | Controlling device for doors |