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
CA102,432A
Inventor
Michio Nakanishi
Hideki Ao
Katsuo Arimura
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.)
Welfide Corp
Original Assignee
Welfide Corp
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 Welfide CorpfiledCriticalWelfide Corp
Priority to CA102,432ApriorityCriticalpatent/CA952907A/en
Application grantedgrantedCritical
Publication of CA952907ApublicationCriticalpatent/CA952907A/en