| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 8 | |
| #2 | United Kingdom | 5 | |
| #3 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wollenhaupt Jakob | 7 |
| #2 | Jakob Wollenhaupt | 2 |
| #3 | Kurt Maecker | 1 |
| #4 | Leveringhaus Dipl-Ing Ernst | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3286595A | Machine tool | |
| GB726720A | Electro-mechanically controlled facing tool head | |
| GB776144A | Drilling, screwing and turning unit | |
| US2768539A | Electrically controlled drilling machine, particularly for drilling deep holes | |
| GB720478A | Improvements in or relating to electrically driven feed mechanism for machine tools | |
| GB718507A | A feed gear for electrically controlled metal-working machines |