Legal status (The legal status 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 status listed.)
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 filedfiledCritical
Application grantedgrantedCritical
Publication of FR665247ApublicationCriticalpatent/FR665247A/en
Improved method and apparatus for extracting and fixing in the state of dry powder the active principles originating from living organic matter or fragile products of organic chemistry