| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | United Kingdom | 1 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Ignition and extinguishing | |
| #2 | Electric switches | |
| #3 | Portable lighting devices | |
| #4 | Lighting device details |
| # | Name | Total Patents |
|---|---|---|
| #1 | Zwilling Ludwig | 1 |
| #2 | Ludwig Zwilling | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB350695A | Benzine or like lighters | |
| US1963345A | Wick lighter |