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
CA775046A
Inventor
S. Mackey Thomas
Lo Ching-Lung
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.)
Wah Chang Corp
Original Assignee
Wah Chang Corp
Publication date
Application grantedgrantedCritical
Publication of CA775046ApublicationCriticalpatent/CA775046A/en