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F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
F04C5/00—Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
A61C17/06—Saliva removers; Accessories therefor
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FR927455A1961-06-291963-03-11Dispositif pour l'aspiration des liquides, de l'air et des particules solides
ExpiredFR1351066A
(fr)
Dispositif de pulvérisation et de projection électrostatique des liquides ou solides pulvérulents, pour le recouvrement d'objets, par exemple au moyen de peinture