Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B42
BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
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B42F
SHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING
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15/00
Suspended filing appliances
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B42F15/0011
for sheets, stacks of temporarily bound sheets
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B42F15/0052
for suspending stacks of temporarily bound sheets
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B42F15/0064
with movable suspension means
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