| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 12 | |
| #2 | United Kingdom | 1 | |
| #3 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Chemical engineering | |
| #3 | Civil engineering | |
| #4 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Fire-fighting | |
| #3 | Cleaning | |
| #4 | Compressed gas holders | |
| #5 | Live-saving devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Esser Carl | 11 |
| #2 | Uecker E | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB283379A | An improved method of and means for cleaning pipes more particularly beer or wine pipes |