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
CA728970A
Inventor
Sasaki Noburo
Mishima Makio
Sugai Yasuo
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.)
ZAIDANHOJIN SEKITAN SOGO KENKYUSHO
Nihon Seikosho KK
Original Assignee
ZAIDANHOJIN SEKITAN SOGO KENKYUSHO
Nihon Seikosho KK
Publication date
Application grantedgrantedCritical
Publication of CA728970ApublicationCriticalpatent/CA728970A/en