Invention Grant
- Patent Title: Break-in circuitry for echo suppressors
- Patent Title (中): 回波抑制器的插入电路
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Application No.: US33019663Application Date: 1963-12-12
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Publication No.: US3313893APublication Date: 1967-04-11
- Inventor: HELDER GEORGE K
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US33019663 1963-12-12
- Main IPC: H04B3/20
- IPC: H04B3/20
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