| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | Belgium | 2 | |
| #3 | France | 2 | |
| #4 | Austria | 1 | |
| #5 | Canada | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Soldering, welding and flame cutting | |
| #2 | Making metal sheets | |
| #3 | Building materials | |
| #4 | Metal tempering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wennemann Werner | 3 |
| #2 | Diener Richard | 2 |
| #3 | Schubert Dipl-Ing Willy | 2 |
| #4 | Werner Wennemann | 1 |
| #5 | Richard Diener | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3004135A | Machines for the manufacture of tubes | |
| CA640615A | Machines for the manufacture of tubes |