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.)
Hamai Seisakusho KK
Resonac Corp
Original Assignee
Hamai Seisakusho KK
Hitachi Powdered Metals Co 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 Hamai Seisakusho KK, Hitachi Powdered Metals Co LtdfiledCriticalHamai Seisakusho KK
Priority to JP9901678ApriorityCriticalpatent/JPS5528310A/ja
Publication of JPS5528310ApublicationCriticalpatent/JPS5528310A/ja
Publication of JPS5747241B2publicationCriticalpatent/JPS5747241B2/ja