Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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B65B
MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
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31/00
Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
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B65B31/003
Adding propellants in fluid form to aerosol containers
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