Patent Number: US 5073940 A
Filing Date: 1989-11-24
Publication Date: 1991-12-17
Status: Expired – Lifetime
Current Assignee: Ericsson Inc / General Electric Co
Applicants: General Electric Co.
IPC/CPC Classifications: G10L19/00;;G10L19/10;;H03M1
Patent Attorney
Lawrence P. Zale