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 US06/575,421external-prioritypatent/US4524009A/en
Application filed by Staley Mfg Co A EfiledCriticalStaley Mfg Co A E
Priority claimed from EP19850300164external-prioritypatent/EP0150930B1/de
Application grantedgrantedCritical
Publication of ATE33130T1publicationCriticalpatent/ATE33130T1/de