Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Niels Helge Boisen OutzenfiledCriticalNiels Helge Boisen Outzen
Application grantedgrantedCritical
Publication of DK32420CpublicationCriticalpatent/DK32420C/en
Improvements made to the means for making two reciprocating bodies move, one by the other, in particular those to be understood by syringes for transfusion of blood
Piston for medical syringes for hypodermic, intramuscular or intravenous injections, the interior of which has an open cavity at the level of the head and arranged to receive the needle for which it serves as a protective sleeve