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
CA19775F
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.)
William Armstrong Armstrong Patent Co Ltd
Original Assignee
William Armstrong Armstrong Patent Co Ltd
Publication date
Priority to CA19775FpriorityCriticalpatent/CA19775S/en
Application grantedgrantedCritical
Publication of CA19775SpublicationCriticalpatent/CA19775S/en