| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 5 | |
| #2 | Switzerland | 4 | |
| #3 | United Kingdom | 4 | |
| #4 | Canada | 1 | |
| #5 | Denmark | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schomburg Ludwig | 15 |
| Publication | Filing date | Title |
|---|---|---|
| GB191409235A | An Improvement in Pipe Sockets or Expansion Joints. | |
| CA149953A | Pipe joint | |
| GB191218503A | Improvement relating to the Packing of Socket-and-spigot and like Pipe-joints. | |
| GB191214940A | Improvements relating to Socket-and-spigot Joints for Pipes. | |
| GB191124117A | Improvements relating to Pipe Joints. |