| Number | Name | Date | Kind |
|---|---|---|---|
| 1814449 | Morgenstern | Jul 1931 | |
| 1850616 | Barnett | Mar 1932 | |
| 2252953 | Walters | Aug 1941 | |
| 2439091 | Keating | Apr 1948 | |
| 4135337 | Medlin | Jan 1979 | |
| 4561615 | Medlin, Jr. | Dec 1985 | |
| 4964525 | Coffey et al. | Oct 1990 | |
| 5005792 | Rinderer | Apr 1991 | |
| 5009383 | Chapman | Apr 1991 | |
| 5176345 | Medlin | Jan 1993 | |
| 5224673 | Webb | Jul 1993 | |
| 5253831 | Theodorides | Oct 1993 | |
| 5263676 | Medlin, Jr. et al. | Nov 1993 | |
| 5288041 | Webb | Feb 1994 | |
| 5354953 | Nattel et al. | Oct 1994 | |
| 5452873 | Laughlin | Sep 1995 |
| Number | Date | Country |
|---|---|---|
| 2215528 | Sep 1989 | GBX |
| Entry |
|---|
| Drawings of Pending Design Application of Applicant filed approximately 13 Nov. 1995. |
| U.S. TEC Flyer, two pages, (undated). |