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
CA794728A
Inventor
F. Graffy Thomas
Zaka Louis
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.)
GPE Controls Inc
Original Assignee
Louis Zaka
Thomas F Graffy
GPE Controls Inc
Publication date
Application grantedgrantedCritical
Publication of CA794728ApublicationCriticalpatent/CA794728A/en