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.)
Nippon Tokushu Togyo KK
Shingijutsu Kaihatsu Jigyodan
Niterra Co Ltd
Original Assignee
NGK Spark Plug Co Ltd
Nippon Tokushu Togyo KK
Shingijutsu Kaihatsu Jigyodan
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 NGK Spark Plug Co Ltd, Nippon Tokushu Togyo KK, Shingijutsu Kaihatsu JigyodanfiledCriticalNGK Spark Plug Co Ltd
Priority to JP60255661ApriorityCriticalpatent/JPS62113769A/ja
Publication of JPS62113769ApublicationCriticalpatent/JPS62113769A/ja
Publication of JPH0553753B2publicationCriticalpatent/JPH0553753B2/ja