|
| US4108440 | 25. Juli 1977 | 22. Aug. 1978 | | Golf putting game |
| US4930784 | 28. Sept. 1989 | 5. Juni 1990 | | Portable putting waffle green |
| US4953865 | 27. Sept. 1989 | 4. Sept. 1990 | Matthew C. Dunne | Putting practice device |
| US5024441 | 5. Apr. 1989 | 18. Juni 1991 | | Golfcourse simulator device |
| US5505451 | 30. Nov. 1994 | 9. Apr. 1996 | | Simulated golf putting green |
| US7195563 | 3. Jan. 2005 | 27. März 2007 | | Adjustable putting green for golf practice |
| US7918743 | 20. Nov. 2006 | 5. Apr. 2011 | | Adjustable putting green for golf practice |
