Patent classifications
A
HUMAN NECESSITIES
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A24
TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
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A24F
SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
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9/00
Accessories for smokers' pipes
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A24F9/04
Cleaning devices for pipes
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A24F9/12
Devices for cleaning tobacco pipes by steam, air, or water
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