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
CA072485A
Inventor
Marquis Byron
L. Somerville Robert
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.)
Singmaster and Breyer
Original Assignee
Singmaster and Breyer
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 Singmaster and BreyerfiledCriticalSingmaster and Breyer
Application grantedgrantedCritical
Publication of CA929320ApublicationCriticalpatent/CA929320A/en