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
CA842376A
Inventor
I. Yegnanarayan Ranga
D. Gupta Ranjit
S. R. Jayasimha Mysore
S. Rao Krishnappa
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.)
INDIAN TELEPHONE INDUSTRIES Ltd
Original Assignee
INDIAN TELEPHONE INDUSTRIES Ltd
Publication date
Application grantedgrantedCritical
Publication of CA842376ApublicationCriticalpatent/CA842376A/en