| Business | Phone |
| Adelphi Technology Inc 981 Industrial Ave, Palo Alto 94303 | (650) 328-7337 |
| California Cards & Systems 624 Wellsbury Way, Palo Alto 94306 | (650) 493-4724 |
| Griffin Control Systems 575 E Meadow Dr, Palo Alto 94306 | (650) 565-8647 |
| Illico Telecommunications Palo Alto 94301 | (650) 327-7675 |
| Rwk Consulting Assoc Inc 1925 Bryant St, Palo Alto 94301 | (650) 327-2061 |
| Katros Vahe 100 Hamilton Ave, Palo Alto 94301 | (650) 326-4577 |
| Walker Systems 855 El Camino Real # 404, Palo Alto 94301 | (650) 322-7311 |
| Mhd Instruments 788 Stern Ave, Palo Alto 94303 | (650) 856-2586 |