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
CA827441A
Inventor
E. Kelley William
Robert W. Ott, Jr.
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.)
Tetra Holding US Inc
Original Assignee
Aquarium Systems Inc
Publication date
Application grantedgrantedCritical
Publication of CA827441ApublicationCriticalpatent/CA827441A/en