Aalto Erkki
AB PH, Nederman & Co.
AB Ph. Nederman & Co.
AB Volve
Abb Flakt Oy
Abbott Thomas A.
Abouchaar Nicolas
AC Directional Control, Inc.
Acanthe
Accu*Aire Systems, Inc.
Accutek Products Corp.
ACI Air Technologies, LLC
Action Metal Fabrications Corp.
Adams Albert G.
Adib Camille
Adkins, II Dwight O.
Adler Erich
Aerospace Engineering and Research Consultants Limited
Aerospace Lighting Corp.
AET Arbeidsmilj.o slashed. og Energiteknikk A/S