| Number | Date | Country | Kind |
|---|---|---|---|
| 195 04 248.4 | Feb 1995 | DEX |
| Number | Name | Date | Kind |
|---|---|---|---|
| 1552199 | Beckman | Sep 1925 | |
| 1666568 | Jackson | Apr 1928 | |
| 2596873 | Solmes | May 1952 | |
| 3095233 | Dryden | Jun 1963 | |
| 3191986 | Simon | Jun 1965 | |
| 4580829 | Matheopoulos | Apr 1986 | |
| 4913483 | Jasso | Apr 1990 |
| Number | Date | Country |
|---|---|---|
| 8110470 | Jul 1981 | DEX |
| 4210644 | Jul 1993 | DEX |
| 2173461 | Oct 1986 | GBX |
| Entry |
|---|
| Patent Abstracts of Japan, No. 62-184925 (A), Jan. 29, 1988, vol. 12, No. 31. |