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.)
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.)
Babcock and Wilcox Co
Original Assignee
Joy Manufacturing Co
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
Priority claimed from CA300,045Aexternal-prioritypatent/CA1125187A/fr
Application filed by Joy Manufacturing CofiledCriticalJoy Manufacturing Co
Priority to CA000389663ApriorityCriticalpatent/CA1136068A/fr
Application grantedgrantedCritical
Publication of CA1136068ApublicationCriticalpatent/CA1136068A/fr