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
CA728995A
Inventor
Barany George
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.)
Cambridge Filter Corp
Original Assignee
Cambridge Filter Corp
Publication date
Application grantedgrantedCritical
Publication of CA728995ApublicationCriticalpatent/CA728995A/en