| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 7 | |
| #2 | United Kingdom | 3 | |
| #3 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Machine tools | |
| #3 | Electrical machinery and energy | |
| #4 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Acetylene production | |
| #2 | Soldering, welding and flame cutting | |
| #3 | Containers for goods storage | |
| #4 | Portable lighting devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Carl Keel | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB366153A | Apparatus for automatically soldering longitudinal or annular joints | |
| GB195488A | Improved acetylene gas apparatus | |
| GB177883A | Improvements relating to acetylene lamps |