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
CA911819A
Inventor
V. Wakefield Ralph
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.)
APPLIED RESEARCH AND DEVELOPMENT
Original Assignee
APPLIED RESEARCH AND DEVELOPMENT
Publication date
Application grantedgrantedCritical
Publication of CA911819ApublicationCriticalpatent/CA911819A/en