S
WABB
WArevaA
WAteliers de Constructions Electriques de Charleroi
WFerranti-PackardB
WGanz Works
WHanwha GroupC
WInstitute of Aviation, Warsaw
WKliegl Brothers Universal Electric Stage Lighting CompanyD
WLáng Machine Factory
WLittelfuseE
WMaschinenfabrik Oerlikon
WPythagoras Mechanical Workshop MuseumF
WServel
WTurboatom