| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 5 | |
| #2 | Switzerland | 3 | |
| #3 | Germany | 3 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sauerstoff-Fabrik Berlin G M B | 3 |
| #2 | Galitz Georg | 2 |
| #3 | Kupfer-Und Drahtwerk Osnabruec | 1 |
| #4 | Hanser Dipl-Ing Klaus | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE717136C | Steel bottle shut-off valve | |
| DE717628C | Closing valve for steel bottles | |
| DE624346C | Welding torch for welding metals with high thermal conductivity |