Ahlstrom
Aikawa Ryouji
Alengoz Anton S.
Arai Shinichiro
Arai Soji
Artemenko Anatoly I.
Atarashiya Kousuke
Bassett Scott B.
Bossand Bernard
Brizard Cyril J. C.
Brose Harlan F.
Brouillet Alfred O.
Cambridge Filter Japan, Ltd.
Clean Air Research & Engineering, Inc.
Cyclo.sub.3 pss Medical Systems, Inc.
Danilevsky Mikhail G.
Del Ben Sante
Delachapelle Henri L.
Domnick Hunter Filters Ltd.
Dowgul Ronald W.