| G.M ALLEN & M.C ALLEN | Main Name (Current) | ABR |
| GEOFFREY M & MARCIA C ALLEN | Main Name (Historical) | ABR |
| SENTINEL COMPUTING SERVICES | Main Name (Historical) | ABR |
| GEOFFREY M & MARCIA C ALLEN | Main Name (Historical) | ABR |
| G M & M C ALLEN | Main Trading Name (Current) | ABR |
| GEOFFREY M & MARCIA C ALLEN | Main Trading Name (Historical) | ABR |
| SENTINEL COMPUTING SERVICES | Main Trading Name (Historical) | ABR |