|
| US4670996 | 28 juil. 1986 | 9 juin 1987 | | Women's shoes with flexible spring steel shanks for use with replaceable heels of different height |
| US5542198 | 21 déc. 1994 | 6 août 1996 | Dexter Shoe Company | Bowling shoe construction with removable slide pad and heel |
| US6598324 | 23 févr. 2000 | 29 juil. 2003 | American Bowling Services, Inc. | Bowling shoes having customizable ground engagement |
| US6662475 | 27 févr. 2002 | 16 déc. 2003 | Columbia Insurance Company | Reversible heel |
| US6907682 | 21 nov. 2001 | 21 juin 2005 | Columbia Insurance Company | Horseshoe-shape bowling shoe heel |
| US8132341 | 29 oct. 2008 | 13 mars 2012 | | Detachable heel system |
