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
CA623192A
Inventor
H. Stubington Richard
R. Parker Leonard
Bown Charles
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.)
MERRYWEATHER AND SONS Ltd
Original Assignee
MERRYWEATHER AND SONS Ltd
Publication date
Application grantedgrantedCritical
Publication of CA623192ApublicationCriticalpatent/CA623192A/en