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Inventor: Masao Oshima

Address: Tokyo, JP
No. of patents: 1
Last patent issue date: 04/23/1985

Number	Title	Issue Date
4512936	Aeration apparatus Aeration apparatus for aerating a liquid to be treated in an aeration tank. The aeration apparatus has an impeller by means of which the liquid is displaced through an annular discharge passage defined between an outer casing and an inner casing disposed ...	04/23/1985