LandOfFree - US Patents - Listing for Binder device releasably engaging aperture or notch of sheet

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Ring mechanism for loose leaf binders and method of manufacture

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 mechanism for loose-leaf binders

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 mechanism having blunt ends

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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Ring mechanism with spring biased travel bar

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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Ring metal shield for use with concealed fastener

Binder device releasably engaging aperture or notch of sheet – Sheet retainer with releasable keeper – Keeper cooperating with retainer of varying cross-section

Reexamination Certificate

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Ring metals with linkage locking device

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

Patent

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Ring notebook adapter

Binder device releasably engaging aperture or notch of sheet – Sheet

Patent

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Ring type 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 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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Ring-center pivot loose-leaf binder page lifter

Binder device releasably engaging aperture or notch of sheet – Miscellaneous – Sheet lifters

Reexamination Certificate

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Rotatable binder insert

Binder device releasably engaging aperture or notch of sheet – Sheet

Patent

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Rotatable locking mechanism for ring systems

Binder device releasably engaging aperture or notch of sheet – Sheet retainer with releasable keeper – Keeper cooperating with retainer of varying cross-section

Reexamination Certificate

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Rotatable writing support notebook insert

Binder device releasably engaging aperture or notch of sheet – Sheet

Patent

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Round back binder

Binder device releasably engaging aperture or notch of sheet – Depository – Face member with back member

Patent

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