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 US06/113,761external-prioritypatent/US4279711A/en
Application filed by Paul H. Vining, Jack A. Scott, Paul F. DubyfiledCriticalPaul H. Vining
Application grantedgrantedCritical
Publication of ATE7518T1publicationCriticalpatent/ATE7518T1/en