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 US05/849,976external-prioritypatent/US4114702A/en
Priority claimed from US05/849,988external-prioritypatent/US4114704A/en
Application filed by Maurer EngfiledCriticalMaurer Eng
Publication of MX147426ApublicationCriticalpatent/MX147426A/es