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
CA087210A
Inventor
Gorin Everett
M. Yavorsky Paul
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.)
Consolidation Coal Co
Original Assignee
Consolidation Coal 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
Application filed by Consolidation Coal CofiledCriticalConsolidation Coal Co
Priority to CA087210ApriorityCriticalpatent/CA928933A/en
Application grantedgrantedCritical
Publication of CA928933ApublicationCriticalpatent/CA928933A/en