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
CA871457A
Inventor
A. Prutton Edward
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.)
PRUTTON CORP
Original Assignee
PRUTTON CORP
Publication date
Application grantedgrantedCritical
Publication of CA871457ApublicationCriticalpatent/CA871457A/en