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
CA657691A
Inventor
F. Hickman Albert
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.)
Bostrom Corp
Original Assignee
Bostrom Corp
Publication date
Application grantedgrantedCritical
Publication of CA657691ApublicationCriticalpatent/CA657691A/en