| Relationships | Role | Relationship Start | Relationship End |
| Equitable Company Of Texas, The | Parent | 6/30/1977 | 7/5/1978 |
| Equitable Company Of Texas, The | Parent | 4/12/1976 | 6/29/1977 |
| Mercantile National Corporation | Parent | 7/31/1975 | 4/11/1976 |
| Greer Hydraulics, Inc | Subsidary | 4/12/1976 | 7/5/1978 |
| Sun-Ray Burner Mfg. Corp | Subsidary | 4/12/1976 | 7/5/1978 |
| H. O. Boehme, Inc. | Subsidary | 4/12/1976 | 7/5/1978 |
| Liquidonics Finance, N.V. | Subsidary | 4/12/1976 | 7/5/1978 |