Legal status (The legal status 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 status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Rubber Industries Ltd
Nippon Kokan Koji KK
Japan National Railways
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Rubber Industries Ltd
Nippon Kokan Koji KK
Japan National Railways
Sumitomo Electric Industries Ltd
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 Sumitomo Rubber Industries Ltd, Nippon Kokan Koji KK, Japan National Railways, Sumitomo Electric Industries LtdfiledCriticalSumitomo Rubber Industries Ltd
Priority to JP13647074ApriorityCriticalpatent/JPS542721B2/ja
Priority to DE19752532263prioritypatent/DE2532263A1/de
Priority to FR7522612Aprioritypatent/FR2285258A1/fr
Publication of JPS5160994ApublicationCriticalpatent/JPS5160994A/ja
Publication of JPS542721B2publicationCriticalpatent/JPS542721B2/ja