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
CA881578A
Inventor
K. Piiroya Eduard
Felix-Ottomarovna Adrat Mall
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.)
Tallinsky Politekhnichesky Institut
Original Assignee
Eduard K Piiroya
Mall Felix-Ottomarovna Adrat
Tallinsky Politekhnichesky Institut
Publication date
Application grantedgrantedCritical
Publication of CA881578ApublicationCriticalpatent/CA881578A/en