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
CA898535A
Inventor
Sakai Satoshi
Shirakawa Kenzo
Shimizu Norio
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Publication date
Application grantedgrantedCritical
Publication of CA898535ApublicationCriticalpatent/CA898535A/en