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Archive | 1985

SCREW TYPE VACUUM PUMP

Katsumi Matsubara; Riichi Uchida; Masatoshi Muramatsu; Kotaro Naya; Tsuneharu Takagi


Archive | 1987

Vacuum evacuation system

Tadashi Hayakawa; Kazuaki Shiinoki; Sinji Mitsuhashi; Kotaro Naya


Archive | 1987

Two-stage vacuum pump apparatus and method of operating the same

Riichi Uchida; Seiji Tsuru; Kazuaki Shiinoki; Kotaro Naya


Archive | 1988

Vacuum pump apparatus and shaft sealing device therefor

Riichi Uchida; Kotaro Naya


Archive | 1992

Screw-type rotary fluid machine including rotors having treated surfaces

Akihiko Yamamoto; Toshihiro Yamada; Tatsuo Natori; Kotaro Naya; Motohiro Satoo; Mitsuru Fujiwara; Katsumi Matsubara; Kazuaki Shinoki; Hirotaka Kameya


Archive | 1987

Vacuum generating system

Tadashi Hayakawa; Kazuaki Shiinoki; Sinji Mitsuhashi; Kotaro Naya


Archive | 1991

Bearing construction and screw fluid machine therewith

Hirochika Kametani; Kotaro Naya; Riichi Uchida; 裕敬 亀谷; 利一 内田; 孝太郎 納谷


Archive | 1991

Method of treating surfaces of rotors of the screw type rotary machine

Akihiko Yamamoto; Toshihiro Yamada; Tatsuo Natori; Kotaro Naya; Motohiro Satoo; Mitsuru Fujiwara; Katsumi Matsubara; Kazuaki Shiinoki; Hirotaka Kameya


Archive | 1991

Screw type dry vacuum pump

Hirochika Kametani; Kotaro Naya; Eiichi Sato; Kazuaki Shiiki; Riichi Uchida; 裕敬 亀谷; 栄一 佐藤; 利一 内田; 和明 椎木; 孝太郎 納谷


Archive | 1985

Multiple stage screw vacuum pump

Katsumi Matsubara; Masatoshi Muramatsu; Kotaro Naya; Yasuo Takahashi; Naoyuki Tanaka; Seiji Tsuru; Riichi Uchida

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