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 Erhard Knobel, Hans Kolberg, Manfred RoelligfiledCriticalErhard Knobel
Priority to DD20153377ApriorityCriticalpatent/DD134450B1/de
Priority to SU787770303Aprioritypatent/SU918302A1/ru
Priority to CS610578Aprioritypatent/CS249751B1/cs
Priority to HUPE001056prioritypatent/HU180272B/hu
Publication of DD134450A1publicationCriticalpatent/DD134450A1/de
Publication of DD134450B1publicationCriticalpatent/DD134450B1/de