| Number | Name | Date | Kind |
|---|---|---|---|
| D274283 | Wright | Jun 1984 | |
| D354322 | Vodhanel, Jr. | Jan 1995 | |
| D355007 | Rojas et al. | Jan 1995 | |
| D374047 | Thielemann | Sep 1996 | |
| D394685 | Eckmann | May 1998 | |
| D406183 | Zovich | Feb 1999 | |
| D409695 | Rojas et al. | May 1999 | |
| D421076 | Lincir | Feb 2000 | |
| D424140 | Lincir | May 2000 | |
| 1047212 | Hamilton | Dec 1912 | |
| 3572702 | Dorn | Mar 1971 | |
| 3771785 | Speyer | Nov 1973 | |
| 4079932 | Scheutz | Mar 1978 | |
| 4673179 | Pengler | Jun 1987 | |
| 5137502 | Anastasi | Aug 1992 | |
| 5344375 | Cooper | Sep 1994 | |
| 5421797 | Fletcher | Jun 1995 | |
| 5692996 | Widerman | Dec 1997 | |
| 5853355 | Standish | Dec 1998 |
| Entry |
|---|
| "Check Out Iron Grip's New Urethane Olympic Plates," National Fitness Trade Journal (Winter 1997). |
| Product brochure fom Iron Grip Barbell Company on urethane coated weight plates and olympic bars (date unknown). |
| Product brochure from Iron Grip Barbell Company (date unknown). |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 071765 | May 1998 |