| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | Austria | 3 | |
| #3 | Denmark | 3 | |
| #4 | Switzerland | 1 | |
| #5 | United Kingdom | 1 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Fire-fighting | |
| #2 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hinkel Friedrich Wilhelm | 1 |
| #2 | H Internationale Feuerloescher | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE553583C | Dry fire extinguisher | |
| DE494169C | Dry fire extinguisher | |
| GB245000A | Improvements in apparatus for dry fire extinguishers | |
| DE445719C | Carburetor for liquefied pressurized gas to expel extinguishing agents | |
| US1097435A | Apparatus for extinguishing fires. | |
| DE352634C | Pressure medium valve for fire extinguisher |