| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 8 | |
| #2 | United Kingdom | 4 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Environmental technology | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Portable lighting devices | |
| #2 | Batteries | |
| #3 | Lighting device details | |
| #4 | Reduction of greenhouse gas emissions | |
| #5 | Electric switches | |
| #6 | Preparing clay |
| Publication | Filing date | Title |
|---|---|---|
| GB393479A | Improvements in torch batteries | |
| GB387965A | Improvements in high tension batteries composed from torch batteries | |
| GB389754A | Improvements in electric torch batteries | |
| GB388802A | Improvements in or relating to concrete mixers | |
| DE555420C | Device for connecting electric batteries, in particular flashlight batteries | |
| DE494929C | Dry battery with several elements connected in series |