| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 12 | |
| #2 | Switzerland | 4 | |
| #3 | Germany | 3 | |
| #4 | Belgium | 1 | |
| #5 | Denmark | 1 | |
| #6 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Scaffolding | |
| #2 | Nails |
| # | Name | Total Patents |
|---|---|---|
| #1 | Peter Liesenfeld | 2 |
| #2 | Liesenfeld Peter | 2 |
| #3 | Schalk Eugen | 1 |
| #4 | Romek Arpad Dipl Ing | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1006392A | A connecting device for scaffolding steel tubing | |
| DE1025608B | Nodal element for pipe scaffolding | |
| DE1023876B | Clamp for scaffolding pipes | |
| DE1019457B | Nodal element for pipe scaffolding |