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Binder device releasably engaging aperture or notch of sheet
Sheet retainer with releasable keeper
Keeper including wedge type securing means
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Device for the permanent binding of sheaves of paper and method
Binder device releasably engaging aperture or notch of sheet – Sheet retainer with releasable keeper – Keeper including wedge type securing means
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Canada
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Employee Salary Disclosure
World
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United States
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Patents
Employee Salary Disclosure