|
| US4538814 | 4. Sept. 1984 | 3. Sept. 1985 | | Trifunctional golfing cage |
| US4541632 | 1. Mai 1984 | 17. Sept. 1985 | | Golf ball teeing apparatus |
| US5332224 | 18. Nov. 1992 | 26. Juli 1994 | Jeffrey M. Libit | Convenient golf game with adjustable out-of-bounds markers |
| US6409607 | 20. Apr. 1999 | 25. Juni 2002 | | Golf courses and methods of playing golf |
