| Business | Phone |
| Apogee Electronics Corp 3145 Donald Douglas Loop S, Santa Monica 90405 | (310) 915-1000 |
| Apogee Electronics Corp 1715 Berkeley St, Santa Monica 90404 | (310) 915-1000 |
| Colby Instruments Inc 3250 Ocean Park Blvd # 240, Santa Monica 90405 | (310) 450-0261 |