- Aardvark Speciality Transducer
- Aardvark Speciality Transducer
- Airmar Technology Corp
- Business Information Group
- Business Information Group
- Business Information Group
- Canfield Electronics Inc
- Comtel Midwest Co
- Dynisco Corp
- Harris Accoustics
- Interface Inc
- Kulite Semiconductor Products
- Magna-Lastic Devices Inc
- Motion Sensors
- Ohio Semitronics Inc
- Omegadyne Inc
- Robert Denton Inc
- Robert Denton Inc
- S Himmelstein & Co
- S Himmelstein & Co
- Sensotec
- STAVELEY Sensors Inc
