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.)
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.)
Durand Machine Co Ltd
Original Assignee
Durand Machine Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Durand Machine Co LtdfiledCriticalDurand Machine Co Ltd
Priority to CA249,436ApriorityCriticalpatent/CA1044719A/fr
Application grantedgrantedCritical
Publication of CA1044719ApublicationCriticalpatent/CA1044719A/fr