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2234401
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Information
Patent Grant
2234401
References
Source
Patent Number
2,234,401
Date Filed
Not available
Date Issued
Tuesday, March 11, 1941
83 years ago
CPC
B42D1/06 - in which the fillings and covers are united by other means
B42D1/002 - Back of leaves or signatures prepared for binding
US Classifications
402 - Binder device releasably engaging aperture or notch of sheet
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