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.)
Expired
Application number
CA630270A
Inventor
Hirakawa Tamiro
Mukoyama Shigeki
Asano Kosuke
Hara Shuichiro
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 Light Metal Co Ltd
Original Assignee
Nippon Light Metal Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA630270ApublicationCriticalpatent/CA630270A/en