| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 7 | |
| #2 | Italy | 5 | |
| #3 | Brazil | 4 | |
| #4 | Sweden | 3 | |
| #5 | United States | 3 | |
| #6 | Germany | 2 | |
| #7 | South Africa | 2 | |
| #8 | Australia | 1 | |
| #9 | Denmark | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Turning | |
| #2 | Unspecified technologies | |
| #3 | Rolling metal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hertel K | 12 |
| #2 | Martens W | 1 |
| #3 | Hertel Karl | 1 |
| #4 | Zimmermann H | 1 |
| #5 | Hertel G | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ZA7702299B | A roll | |
| GB1483550A | Cutting tools for use in machine tools | |
| ZA7404527B | Clampable cutting tool bit holder | |
| DK142864B | Clip holder for turning cutter plate | |
| US3842470A | Tool holder for a cutting tool | |
| GB1399150A | Cutting tool | |
| US3775817A | Turning tool |