Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B42
BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
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B42B
PERMANENTLY ATTACHING TOGETHER SHEETS, QUIRES OR SIGNATURES OR PERMANENTLY ATTACHING OBJECTS THERETO
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4/00
Permanently attaching together sheets, quires or signatures by discontinuous stitching with filamentary material, e.g. wire
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B42B4/02
Rotary type stitching machines
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