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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A24F1/02
with arrangements for cleaning or cooling the smoke
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A24F1/04
with smoke chamber or slobber traps
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