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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Gold - & Silber-Scheide-Anstalt Vorm Roessler
Evonik Operations GmbH
Original Assignee
Deutsche Gold - & Silber-Scheide-Anstalt Vorm Roessler
Deutsche Gold und Silber Scheideanstalt
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 Deutsche Gold - & Silber-Scheide-Anstalt Vorm Roessler, Deutsche Gold und Silber ScheideanstaltfiledCriticalDeutsche Gold - & Silber-Scheide-Anstalt Vorm Roessler
Application grantedgrantedCritical
Publication of FR447725ApublicationCriticalpatent/FR447725A/en