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 Nu Pipe IncfiledCriticalNu Pipe Inc
Priority to IN714MA1989priorityCriticalpatent/IN174088B/en
Publication of IN174088BpublicationCriticalpatent/IN174088B/en