| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 6 | |
| #2 | Austria | 3 | |
| #3 | Canada | 1 | |
| #4 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Doors and windows | |
| #2 | Structural elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Prase Werner | 9 |
| #2 | Werner Prase | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2626153A1 | Prefabricated door panel for insertion into frame - has hollow parts for panel components for matching door frame width | |
| CA567531A | Method of producing boards of pressed or molded material |