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.)
Rock Island Oil and Refining Co Inc
Original Assignee
Rock Island Oil and Refining Co Inc
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 Rock Island Oil and Refining Co IncfiledCriticalRock Island Oil and Refining Co Inc
Priority to FR929583ApriorityCriticalpatent/FR1359384A/fr
Application grantedgrantedCritical
Publication of FR1359384ApublicationCriticalpatent/FR1359384A/fr