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
Priority claimed from DE3330627Aexternal-prioritypatent/DE3330627C2/de
Application filed by Pfisterer Elektrotech KarlfiledCriticalPfisterer Elektrotech Karl
Application grantedgrantedCritical
Publication of ATE25171T1publicationCriticalpatent/ATE25171T1/de