| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 11 | |
| #2 | Germany | 2 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Civil engineering | |
| #3 | Chemical engineering | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Swimming pools | |
| #3 | Making metal sheets | |
| #4 | Construction of roads | |
| #5 | Separation |
| Publication | Filing date | Title |
|---|---|---|
| DE541738C | Pipe connection, especially for metal pipes | |
| GB190463A | Coupling device for pipes supplying fluids under pressure | |
| DE399191C | Connection for tubular metal bodies |