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.)
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 NORRIS INDUSTRIESfiledCriticalNORRIS INDUSTRIES
Priority to CA141,814ApriorityCriticalpatent/CA948480A/en
Application grantedgrantedCritical
Publication of CA948480ApublicationCriticalpatent/CA948480A/en