Patent classifications
A
HUMAN NECESSITIES
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A61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
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A61C
DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
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17/00
Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
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A61C17/06
Saliva removers; Accessories therefor
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A61C17/12
Control devices, e.g. for suction
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A61C17/125
with backflow prevention, e.g. check valves
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