| Relationships | Role | Relationship Start | Relationship End |
| Citicorp International Trading Company, Inc. | Parent | 5/2/1987 | 11/20/1987 |
| American Technology Corporation, Limited | Parent | 12/1/1985 | 5/1/1987 |
| Relationships | Role | Relationship Start | Relationship End |
| Citicorp International Trading Company, Inc. | Parent | 5/2/1987 | 11/20/1987 |
| American Technology Corporation, Limited | Parent | 12/1/1985 | 5/1/1987 |