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
CA840920A
Inventor
Kowalenko Witold
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.)
INSTYTUT TECHNIKI BUDOWLANEJ
Original Assignee
INSTYTUT TECHNIKI BUDOWLANEJ
Publication date
Application grantedgrantedCritical
Publication of CA840920ApublicationCriticalpatent/CA840920A/en