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
CA702303A
Inventor
J. Sanders Guy
N. Rink Charles
Oppenheim Arthur
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.)
Industrial Acoustics Co Inc
Original Assignee
Industrial Acoustics Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA702303ApublicationCriticalpatent/CA702303A/en