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 Robert J Spadafora, Kraemer PhilipfiledCriticalRobert J Spadafora
Priority claimed from EP90914041Aexternal-prioritypatent/EP0493451B1/de
Application grantedgrantedCritical
Publication of ATE98395T1publicationCriticalpatent/ATE98395T1/de