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
CA909527A
Inventor
Strickland Harold
Jones Clabeorn
K. Wilson William
E. Herz Alvin
D. Anderson Robert
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.)
LB Foster Co
Original Assignee
LB Foster Co
Publication date
Application grantedgrantedCritical
Publication of CA909527ApublicationCriticalpatent/CA909527A/en