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.)
Vulcan Materials Co
Original Assignee
Vulcan Materials 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 US20541Aexternal-prioritypatent/US3029297A/en
Application filed by Vulcan Materials CofiledCriticalVulcan Materials Co
Priority to FR876789ApriorityCriticalpatent/FR1309472A/fr
Application grantedgrantedCritical
Publication of FR1309472ApublicationCriticalpatent/FR1309472A/fr