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
CA639829A
Inventor
E. Atwood George
J. Bourne Douglas
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.)
Duval Sulphur and Potash Co
Original Assignee
Duval Sulphur and Potash Co
Publication date
Application grantedgrantedCritical
Publication of CA639829ApublicationCriticalpatent/CA639829A/en