| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 7 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Engines, pumps and turbines | |
| #3 | Furniture and games | |
| #4 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gebhardt Hans | 2 |
| #2 | Hans Gebhardt | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB457539A | Improvements in or relating to devices for producing acetylene gas | |
| US2148935A | Acetylene gas producing plant | |
| GB313669A | Method of producing acetylene and apparatus therefor | |
| GB297337A | Improvements in internal-combustion-engines using acetylene and in gas generators therefor |