| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 | |
| #2 | Switzerland | 8 | |
| #3 | Austria | 7 | |
| #4 | Finland | 7 | |
| #5 | Denmark | 4 | |
| #6 | Spain | 3 | |
| #7 | United Kingdom | 2 | |
| #8 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Chemical engineering | |
| #3 | Control | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Mixing | |
| #2 | Fire-fighting | |
| #3 | Chemical means for extinguishing fires | |
| #4 | Punching metal | |
| #5 | Systems controlling non-electric variables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Haftung Komet Kompagnie Fuer O | 6 |
| #2 | Wilhelm Friedrich | 5 |
| #3 | Komet Kompagnie Fuer Optik Mec | 2 |
| #4 | Friedrich W | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB491838A | Improvements in apparatus for generating foam | |
| DE717043C | Pressure-reducing closure for pressure medium container | |
| GB396779A | Treating dry fire extinguishing powder to prevent caking | |
| DE529762C | Dry fire syringe |