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.)
Dresser Sie Inc
Original Assignee
Dresser Sie 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
Priority claimed from US402418Aexternal-prioritypatent/US3314046A/en
Application filed by Dresser Sie IncfiledCriticalDresser Sie Inc
Priority to FR34222ApriorityCriticalpatent/FR1449412A/fr
Application grantedgrantedCritical
Publication of FR1449412ApublicationCriticalpatent/FR1449412A/fr