| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | EPO (European Patent Office) | 2 | |
| #3 | Austria | 1 | |
| #4 | Belgium | 1 | |
| #5 | Switzerland | 1 | |
| #6 | Denmark | 1 | |
| #7 | Finland | 1 | |
| #8 | France | 1 | |
| #9 | Italy | 1 | |
| #10 | Netherlands | 1 | |
| #11 | Norway | 1 | |
| #12 | Portugal | 1 | |
| #13 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machine tools | |
| #3 | Audio-visual technology | |
| #4 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Nails | |
| #2 | Making screws | |
| #3 | Advertising | |
| #4 | Vehicle parts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wittmann Wolfgang | 6 |
| #2 | Schumacher Ulrich | 3 |
| #3 | Schumacher Ulrich Dr | 2 |
| #4 | Schwarzpaul Erwin | 2 |
| #5 | Kring Eberhard | 2 |
| #6 | Wittmann W | 1 |
| #7 | Wittmann Wolfgang Ing | 1 |
| #8 | Schumacher U | 1 |
| #9 | Wittmann Wolfgang Ing Grad | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE4131165A1 | THREAD-FORMING SCREW AND METHOD FOR PRODUCING THE SAME AND ROLLING JAWS FOR CARRYING OUT THE METHOD | |
| DE2757542A1 | FASTENING DEVICE FOR SIGNS ON A CARRIER, IN PARTICULAR FOR MOTOR VEHICLE LICENSE PLATES | |
| DE2703433A1 | THREAD FORMING SCREW AND METHOD OF MANUFACTURING THE SAME AND ROLLING JAW FOR PERFORMING THE METHOD | |
| DE2619559A1 | Fixing screws for vehicle number plate - have flat head with serrated underside permitting single use only |