Invention Grant
- Patent Title: Automatic telephone exchange
- Patent Title (中): 自动电话交换
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Application No.: US2953960Application Date: 1960-05-16
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Publication No.: US3222458APublication Date: 1965-12-07
- Inventor: AUGUST DAHLBLOM ROLF , BERNHARD LILLSUNDE
- Applicant: ERICSSON TELEFON AB L M
- Assignee: Ericsson Telefon Ab L M
- Current Assignee: Ericsson Telefon Ab L M
- Priority: SE467959 1959-05-15
- Main IPC: H04M
- IPC: H04M20060101 ; H04Q3/00
Information query
