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
CA217,339A
Inventor
Donald J. Smith
Seth Foster
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.)
SMITH-SCHREYER AND ASSOC
Original Assignee
SMITH-SCHREYER AND ASSOC
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
Priority claimed from CA147,199Aexternal-prioritypatent/CA967656A/en
Application filed by SMITH-SCHREYER AND ASSOCfiledCriticalSMITH-SCHREYER AND ASSOC
Priority to CA217,339ApriorityCriticalpatent/CA978270A/en
Application grantedgrantedCritical
Publication of CA978270ApublicationCriticalpatent/CA978270A/en