Warm water dental syringe

作者: Eugene B. Davis

DOI:

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摘要: The specification discloses a dental syringe with tubular handle adapted to pre-heat water before it is delivered through the tip into patient's mouth. Water and air supply hoses are connected handle, electric heater thermostat elements mounted within for maintaining temperature of therein at from about 95° F. 105°

参考文章(4)
P Glasgow, Dental wax extruder ,(1972)
Edson L Kummer, Karl H Burzlaff, Dental instrument assembly ,(1964)
Robert C Angell, Warming system for syringes ,(1940)