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
CA17868F
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.)
Benjamin W T Westlake Westlake Hollas & Co
Original Assignee
Benjamin W T Westlake Westlake Hollas & Co
Publication date
Priority to CA17868FpriorityCriticalpatent/CA17868S/en
Application grantedgrantedCritical
Publication of CA17868SpublicationCriticalpatent/CA17868S/en