| Number | Name | Date | Kind |
|---|---|---|---|
| 637889 | Parker | Nov 1899 | |
| 1484321 | Brouillette et al. | Feb 1924 | |
| 2802250 | Klotz | Aug 1957 | |
| 3983602 | Barry | Oct 1976 | |
| 4157152 | Blastic | Jun 1979 | |
| 5016559 | Larson et al. | May 1991 | |
| 5129126 | Huang | Jul 1992 | |
| 5184375 | Hoyt | Feb 1993 | |
| 5718023 | Billish | Feb 1998 |
| Entry |
|---|
| Drawings from co-pending design application 29/063,932 filed 19 Dec. 1996. |