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
CA813950A
Inventor
A. Ray James
M. Kelly Thomas
B. Peppler Richard
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.)
Martin Marietta Corp
Original Assignee
Martin Marietta Corp
Publication date
Application grantedgrantedCritical
Publication of CA813950ApublicationCriticalpatent/CA813950A/en