Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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B65D
CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
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33/00
Details of, or accessories for, sacks or bags
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B65D33/16
End- or aperture-closing arrangements or devices
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B65D33/25
Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
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B65D33/2508
using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
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B65D33/2541
characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
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B65D33/255
being provided with special visual, audible or tactile indicating means, e.g. indicating proper engagement
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