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
CA127,141A
Inventor
Thomas E. Middleton
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.)
PRE-STRESS CONCRETE
Original Assignee
PRE-STRESS CONCRETE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PRE-STRESS CONCRETEfiledCriticalPRE-STRESS CONCRETE
Priority to CA127,141ApriorityCriticalpatent/CA964974A/en
Application grantedgrantedCritical
Publication of CA964974ApublicationCriticalpatent/CA964974A/en