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
CA636036A
Inventor
F. Neely Lloyd
Ang Choh-Yi
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.)
Johnson Matthey Ltd
Original Assignee
Choh-Yi Ang
Lloyd F Neely
Johnson Matthey and Mallory Ltd
Publication date
Application grantedgrantedCritical
Publication of CA636036ApublicationCriticalpatent/CA636036A/en