| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 4 | |
| #2 | Germany | 3 | |
| #3 | France | 3 | |
| #4 | Belgium | 1 | |
| #5 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Making metal sheets | |
| #2 | Milling | |
| #3 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Roeters Wilhelmus Theodorus | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1189358B | Fastening element for clamping the knife of a cutter head | |
| DE1124452B | Drawing mandrel | |
| GB862788A | Mandrel for tube drawing | |
| DE1009147B | Device for loosening the jaws to be adjusted in a polygonal die | |
| GB756160A | Improvements in drawing dies | |
| GB534931A | Improvements in or relating to mandrel rods having hard metal heads, for example mandrels for drawing tubes |