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Vacuum pump rotor
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Patent number D471208
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Issue date Mar 4, 2003
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Kashiyama Kougyou Industry Co., Ltd.
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Matsumi Iwane
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D15 - Machines not elsewhere specified
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Multiple-type pump
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Patent number 6,514,035
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Issue date Feb 4, 2003
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Kashiyama Kougyou Industry Co., Ltd.
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Matsumi Iwane
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Vacuum pump
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Patent number 6,464,452
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Issue date Oct 15, 2002
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Kashiyama Kougyou Industry Co., Ltd.
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Matsumi Iwane
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Vacuum pump rotor
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Patent number D456422
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Issue date Apr 30, 2002
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Kashiyama Kougyou Industry Co., Ltd.
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Matsumi Iwane
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D15 - Machines not elsewhere specified
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Multiple type vacuum pump
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Patent number 6,302,641
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Issue date Oct 16, 2001
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Kashiyama Kougyou Industry Co., Ltd.
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Matsumi Iwane
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...