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
CA818692A
Inventor
C. Arrance Frank
Berger Carl
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.)
Douglas Aircraft Co Inc
Original Assignee
Douglas Aircraft Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA818692ApublicationCriticalpatent/CA818692A/en