4. Washing, cleaning, or drying machine
  5. Washing, cleaning, or drying machine
  6. Element or attachment

Myoung-sun Choung

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Dust collecting unit for vacuum cleaner

Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate

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Dust collection apparatus for vacuum cleaner

Gas separation – Plural serial basically diverse separating media – Plural stages in unitary casing
Reexamination Certificate

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Dust separating apparatus for a vacuum cleaner

Washing – cleaning – or drying machine – Washing – cleaning – or drying machine – Element or attachment
Design Patent

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