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
CA831463A
Inventor
Ishizuka Hiroshi
Yamagata Kozo
Iwata Takehiro
Sawada Susumu
Jin Tateo
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.)
Nihon Seikosho KK
Original Assignee
Nihon Seikosho KK
Publication date
Application grantedgrantedCritical
Publication of CA831463ApublicationCriticalpatent/CA831463A/en