4. Binder device releasably engaging aperture or notch of sheet
  5. Sheet retainer travels arcuate path
  6. Travel in plane perpendicular to axis of rotation

Chung Nin Ko

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Locking booster ring binder mechanism

Binder device releasably engaging aperture or notch of sheet – Sheet retainer travels arcuate path – Travel in plane perpendicular to axis of rotation
Reexamination Certificate

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Metal ring binder

Office supplies; artists and teachers materials – Book – album or cover – Element or attachment
Patent

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Metal ring binder

Office supplies; artists and teachers materials – Book – album or cover – Element or attachment
Patent

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Metal ring binder with an embossed surface

Office supplies; artists and teachers materials – Book – album or cover – Element or attachment
Patent

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Metal ring binder with ribs

Office supplies; artists and teachers materials – Book – album or cover – Ring bound or looseleaf type
Patent

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Profile ID: LFUS-PAI-P-868110

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