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
CA687481A
Inventor
E. Smith Randal
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.)
Potash Company of America
Original Assignee
Potash Company of America
Publication date
Application grantedgrantedCritical
Publication of CA687481ApublicationCriticalpatent/CA687481A/en