- A C Transformer Corp
- A J Smoy Inc
- Abbott Technologies Inc
- Abbott Technologies Inc
- Able Coil & Electronics Co
- Ace Transformer Svc Co
- Ace Transformer Svc Co
- Actown Electrocoil Inc
- Actown Electrocoil Inc
- Afp Transformers LLC
- Airex Corp
- Alpha Magnetics & Coil Inc
- Alpha Power Inc
- Amecon Inc
- American Transformer Corp
- Andover Inc
- API Delevan
- APW Co
- APX Technologies Inc
- Artisan Magnetics
- Atco Technology Inc
- Atlantic Magnetics Inc
- Az Coil Winding Cnsltnts
- B & L Industries
- B H Electronics Inc
- Babcock Inc
- Babcock Inc
- Basler Electric Co
- Bomag USA
- Bone Frontier Co
- Busch International
- Busch Martec LLC
- Busch Signs 'n Graphics
- Busch Trucking
- Busch's Chop Shop
- Busche's Getty
- Buschman & Jonhnson
- Buschta Brothers Painting
- Buse Funeral Home
- Buse Funeral Home
- Buse Funeral Home
- C R Magnetics
- CAVU Ops Inc
- Central Moloney Components
- Circuit Systems Co Inc
- Circuitek
- Climco Coils Inc
- Coast Magnetics
- Coast Magnetics
- Coil-Q Corp
- Coil-Tran Corp
- Coilform Co
- Coils Inc
- Coils Inc
- Coils Plus
- Commercial Coil
- Componetics
- Constantine Celco Engineering
- Control Concepts Corp
- Cortec Enterprises
- Cramer Coil & Transformer Co
- CTM Magnetics
- Custom Bobbin Windings
- Custom Coil & Transformer Co
- Custom Coils
- Custom Coils Inc
- Custom Magnetics Inc
- Custom Transformers
- Datatronics Romoland Inc
- De Young Mfg Inc
- De Young Mfg Inc
- Delnetics Inc
- Deltona Transformer Corp
- Detroit Coil Co
- Detroit Coil Co
- Dia-Netics Inc
- DSI
- Electro Magnetic Components
- Electro Manufacturing
- Electro Manufacturing
- Electron Coil Co
- Electronetics
- Electronic Coils Inc
- Electronic Coils Inc
- Electronic Products Design Inc
- Electronic Specialists Inc
- Electronic Transformer Corp
- Encore Electronics
- Encore Electronics
- Endicott Coil Co
- Ensign Corp
- Everbrite Electronics
- Filtran Inc
- Frequency Selective Networks
- Frequency Selective Networks
- Frigid Coil
- Future Manufacturing Inc
- General Analog
- Gorman Machine Corp
- Gowanda Electronics Corp
- H W Jencks Inc
- Halo Electronics
- Hammond Power Solutions
- Harrison Corp
- Heritage Transformer Co
- Hermetic Coil Inc
- Hisonic Inc
- Houston Transformer Co
- Houston Transformer Co
- Imag Corp
- J M Transformer Co Inc
- Jerome Industries Corp
- JMK Corp
- KGS Electronics Inc
- Laconia Magnetics Inc
- Ladesco Inc
- Lakeland Transformer Corp
- Leightner Electronics Inc
- Leightner Electronics Inc
- LEPCO
- Macon Electric Coil Co
- Mag Flux
- Magnespec Inc
- Magnetic Circuit Elements Inc
- Magnetic Coils Inc
- Magnetic Component Engineering
- Magnetic Technology
- Magnetic Technology
- Magnetics Enterprise
- Maine Scientific Inc
- Marshall Electric
- Mc Elroy Electronics
- Mech-Tronics
- Microwave Components
- Midcom Inc
- Midwest Current Transformer
- Mitchell Electronics Corp
- Morley Transformer Co
- National Electric Coil
- National Electric Coil
- Neeltran Inc
- Nexus Custom Electronics
- Nexus Custom Electronics Inc
- North Lake Engineering Inc
- NWL Transformers
- P C Transformer Corp
- Payne Magnetics Inc
- PCA Electronics Inc
- Pearson Electronics Inc
- Perkin Elmer Optoelectronics
- Peter W Dahl Co
- Pico Electronics Inc
- Plasma Technics Transformers
- PNC Inc
- Powertran Corp
- Powertran Corp
- Precision Econowind Inc
- Precision Electronic Corp
- Precision Electronics Inc
- Profile Electronics Inc
- Quality Coils Inc
- Quality Magnetics
- Quality Transformer & Elctrncs
- Quality Transformer Corp
- R & B Enterprises
- RAF Technologies Inc
- Rogers Research
- Sag Harbor Ind
- Sag Harbor Industries Inc
- Santronics Inc
- Sartron Inc
- Satin American Corp
- Skyway Magnetics
- Smit Transformer Sales Inc
- Southern Circuits & Components
- Southern Electric Co
- Standex Electronics Inc
- Stonite Coil Corp
- Sub-Tronics Inc
- Sunbelt Transformer
- Sunbelt Transformer
- Sunset Transformers Inc
- Tabtronics Inc
- Tabtronics Inc
- Thordarson Inc
- Thordarson Inc
- Tibbetts Industries Inc
- Todd Systems Inc
- Torotel Inc
- Total Recoil Magnetics Inc
- Tranex Inc
- Transformer Technology Inc
- UMEC USA Inc
- Universal Electronics
- US-Co-Tronics
- W & W Mfg Co
- Warner Electric
- Warsaw Coil Co
- XFMRS Inc
- XFMRS Inc
- Zambre Co
