Vesuvius International Corporation
Vesuvius USA
Vetterli Walter
Wakabayashi Senzo
Weatherall Philip
Weber Juergen
Weyant Jeffrey W.
Williams James R.
Wotsch Eric
Yamada Sadayoshi
Yasuda Takahiro
Yokoi Nobuyuki
Yokoya Shinichiro
Yoshihara Tetsuya
Yotabunn Tomohiro
Zacharias Donald Richard
Zasowski Piotr J.
Zaugg Robert
Zimmerman & Jansen, Duren
Zimmermann & Jansen