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Vacuum apparatus
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Patent number 4,407,140
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Issue date Oct 4, 1983
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Kyowa Vacuum Engineering, Ltd.
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Masakazu Kobayashi
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Vacuum apparatus
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Patent number 4,353,222
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Issue date Oct 12, 1982
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Kyowa Vacuum Engineering, Ltd.
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Masakazu Kobayashi
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES