4. Liquid purification or separation
  5. Structural installation
  6. Closed circulating system

Parker I. Tsuhako

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Aquarium filtering system

Liquid purification or separation – Structural installation – Closed circulating system
Patent

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Bottom rail structural configuration for a venetian blind

Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Venetian blind type
Patent

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Stereo headset with angled speakers

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Reexamination Certificate

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Tilt and lift mechanism for venetian blind

Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Venetian blind type
Patent

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Profile ID: LFUS-PAI-P-423400

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