4. Office supplies; artists and teachers materials
  5. Book, album or cover
  6. Element or attachment

Chun Cheung Law

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Ring binder

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

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Ring binder

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

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Ring binder

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Ring binder

Binder device releasably engaging aperture or notch of sheet – Sheet retainer travels arcuate path
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

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Profile ID: LFUS-PAI-P-524938

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