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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21/00
Nestable, stackable or joinable containers; Containers of variable capacity
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B65D21/02
Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
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B65D21/04
Open-ended containers shaped to be nested when empty and to be superposed when full
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B65D21/043
Identical stackable containers specially adapted for nesting after rotation around a vertical axis
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B65D21/045
about 180° only
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