| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | United States | 3 | |
| #4 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Physical training equipment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sol Hugo | 8 |
| #2 | Koeckelberg Isabelle | 5 |
| #3 | Meertens Jacques | 5 |
| #4 | Fuugo Soru | 1 |
| #5 | Isaberu Ketsukeruberuku | 1 |
| #6 | Buand Thierry M M | 1 |
| #7 | Buand Thierry Maurice Marie | 1 |
| #8 | Jiyatsuku Merutan | 1 |
| #9 | Raemdonck Joris Van | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5299801A | Tennis racket | |
| EP0487963A1 | Tennis racket | |
| DE4116901A1 | Tennis racket with stiff head on flexible connecting arm | |
| DE4037568A1 | TENNIS RACKET | |
| DE4037567A1 | Tennis racket of e.g. carbon@ fibre in epoxy¨ resin - has reinforcing component cross=section widening and decreasing in height towards centre between arms | |
| DE4016650A1 | Bat or esp. tennis racquet - with damping device adjustable esp. by PVC adjusting screw |