AEC-Able Engr. Co.
Aerospace Corporation
Alenia Spazio S.p.A.
Applied Physics Laboatory
Astro Aerospace Corporation
ASTRO, Aerospace
Ball Aerospace Systems Group
Battelle
BEI Motion Systems Company
Boeing Defense & Space Group
BTI
Canadian Aerospace
CASA, Space Division
CNES French Space Center
DASA -ERNO Raumfahrt Tech.
Deutsche Aerospace AG
Draper Laboratory
Emerson Electric
ESA/ESTEC
ETEL SA
Farrand Controls
H. Magnetics
Harmonic Drive Technologies
HD Systems Inc.
Honeywell Satellite Systems Operations
Hughes
Hughes Santa Barbara Research Center
INTELSAT
ITT Aerospace
Jet Propulsion Laboratory
Lockheed Engineering & Sciences Co.
Lockheed Missiles & Space Co.
Marotta Scientific Controls
Martin Marietta
Metal Research, Inc.
MPB Corporation Inc.
NASA-Ames Research Center
NASA-Goddard Flight Center
NASA-Kennedy Space Center
NASA-Langley Research Center
NASA-Lewis Research Center
NASA-Marshall Space Flight Center
NASTEC, Inc.
Naval Research Laboratory
NIPPON Telegraph & Telephone Co.
Research Support Instruments, Inc.
Sandia National Laboratories
Schaeffer Engineering
SEP
Space Industries
Space Systems Loral
Starsys Research Corporation
TELDIX
The Aerospace Corporation
Thiokol Corporation
Tini Alloy Company
University of Maryland