| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 16 | |
| #2 | France | 2 | |
| #3 | Switzerland | 1 | |
| #4 | Denmark | 1 | |
| #5 | Spain | 1 | |
| #6 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Thermal processes | |
| #3 | Measurement | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Bolts for doors or windows | |
| #2 | Wing fittings | |
| #3 | Heat-exchange device details | |
| #4 | Locks | |
| #5 | Weighing | |
| #6 | Indexing scheme relating to hinges | |
| #7 | Metal-working |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schmidt Walter | 3 |
| #2 | Habig Wilhelm | 1 |
| #3 | H Baubeschlagfabrik G M B | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES145708A1 | A door closer device. | |
| GB510918A | Automatic door check with tension contrivance and mechanical brake |