| D583888 | Golf practice putting aid | December, 2008 | Nehrbas | D21/759 |
| 6821212 | Device to convert a golf club into a training system | November, 2004 | Fowler et al. | 473/236 |
| 6780119 | Golf putter attachment | August, 2004 | Gankas | 473/236 |
| D385324 | Golf putting training aid | October, 1997 | Ubaney | D21/759 |
| D353178 | Golf putter attachment | December, 1994 | Koleoglou | D21/759 |
| 5135228 | Practice attachment for golf clubs | August, 1992 | Hawkins et al. | 473/236 |
| 4323246 | Golf practice putting aid | April, 1982 | Nehrbas, Jr. | 473/236 |
| 3489415 | GOLF PRACTICE DEVICE | January, 1970 | Smith | 473/236 |
FIG. 1 is a bottom perspective view of the golf putter attachment;
FIG. 2 is a top plan view thereof;
FIG. 3 is a side view thereof, the undisclosed opposite side being a mirror image;
FIG. 4 is a reduced in scale top plan view shown attached to a golf club; and,
FIG. 5 is a side view of FIG. 4.
The broken line showing of the golf club head is included for the purpose of illustrating and forms no part of the claimed design.