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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1/00
Dental machines for boring or cutting; ; General features of dental machines or apparatus, e.g. hand-piece design
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A61C1/08
Machine parts specially adapted for dentistry
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A61C1/18
Flexible shafts; Clutches or the like;; Bearings or lubricating arrangements; Drives or transmissions
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A61C1/181
Bearings or lubricating arrangements, e.g. air-cushion bearings
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