- Ackeret Engineering Inc
- Architectural & Eng Resources
- Bullock Race Engines
- Cad Cam Inc
- CHR Design Inc
- Funk Engineering
- Jebcon Inc
- Metric Engineering
- Nello Corp
- Patz Technical Svc
- Penn Pro
- Phoenix Services Inc
- Shanahan Engineering
- SMI Companies
- Spatron Transducers
- Spread Spectrum Inc
- Strom Engineering Of Florida
- Universal Resources
- Velocitech
- W Brown Designer
- WRHL Eng Dept
