Invention Grant
- Patent Title: Electronic switching telephone system
- Patent Title (中): 电子开关电话系统
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Application No.: US18162662Application Date: 1962-03-22
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Publication No.: US3221105APublication Date: 1965-11-30
- Inventor: ARSENEAU ROGER E , JOHN BEREZNAK , OSBORN PETER E
- Applicant: ITT
- Assignee: Itt
- Current Assignee: Itt
- Priority: US18162662 1962-03-22
- Main IPC: H04Q3/52
- IPC: H04Q3/52
Public/Granted literature
- US12250498B2 Internet of things equipment management system and operation method thereof Public/Granted day:2025-03-11
Information query
