| 335999 |
Amplifiers, magnetic, pulse, and maser, manufacturing |
| 335999 |
Appliance cords made from purchased insulated wire |
| 335999 |
Atom smashers (i.e., particle accelerators) manufacturing |
| 335999 |
Battery chargers, solid-state, manufacturing |
| 335999 |
Bells, electric, manufacturing |
| 335999 |
Betatrons manufacturing |
| 335999 |
Capacitors (except electronic), fixed and variable, manufacturing |
| 335999 |
Cathodic protection equipment manufacturing |
| 335999 |
Chimes, electric, manufacturing |
| 335999 |
Cleaning equipment, ultrasonic (except dental, medical), manufacturing |