| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 3 | |
| #2 | United States | 3 | |
| #3 | Switzerland | 2 | |
| #4 | Denmark | 2 | |
| #5 | Netherlands | 2 | |
| #6 | Germany | 1 | |
| #7 | EPO (European Patent Office) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Fire-fighting | |
| #2 | Unspecified technologies | |
| #3 | Venting or aerating devices | |
| #4 | Animal care |
| # | Name | Total Patents |
|---|---|---|
| #1 | Klein Wilfried | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US4981179A | Thermal triggering device for sprinklers for stationary fire-extinguishing systems | |
| US4800961A | Sprinkler or fire-extinguishing nozzle | |
| EP0103105A2 | Dry pipe alarm valve/sprinkler deluge valve for fire extinguishing plants | |
| GB8316874D0 | Longitudinally adjustable dry sprinkler head |