| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 9 | |
| #2 | United Kingdom | 5 | |
| #3 | Germany | 3 | |
| #4 | Austria | 2 | |
| #5 | Belgium | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Grinding or polishing devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gressel Rene | 2 |
| #2 | Weber Dipl-Math Ulrich | 1 |
| #3 | Zobrist Bruno | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1120901A | Improvements in and relating to pipe connections | |
| GB911036A | Improvements in tube couplings | |
| GB896767A | Improvements in pipe connections | |
| GB912991A | Improvements in connections for tubes and pipes | |
| DE1168188B | Butt joint, especially for copper pipes | |
| DE1154682B | Butt joint for pipes | |
| GB839399A | Improvements in and relating to pipe connections | |
| DE1136168B | Butt joint, especially for copper pipes |