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.)
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Publication date
Application filed by Japan Pipe Conveyor, Okazaki HaruofiledCriticalJapan Pipe Conveyor
Priority to ZA874189ApriorityCriticalpatent/ZA874189B/en
Publication of ZA874189BpublicationCriticalpatent/ZA874189B/en