| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 33 | |
| #2 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Electrical machinery and energy | |
| #3 | Civil engineering | |
| #4 | Telecommunications | |
| #5 | Chemical engineering | |
| #6 | Packaging and shipping | |
| #7 | Textiles and paper | |
| #8 | Thermal processes | |
| #9 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Alarm systems | |
| #2 | Traffic control systems | |
| #3 | Electric switches | |
| #4 | Locks | |
| #5 | Telephonic communication | |
| #6 | Reproduction of printing surfaces | |
| #7 | Vehicle parts | |
| #8 | Separation | |
| #9 | Air-conditioning | |
| #10 | Transferring liquids |
| Publication | Filing date | Title |
|---|---|---|
| GB293672A | Improvements in or relating to signal lamps for regulation of road traffic |