Invention Grant
- Patent Title: Switch cleaning tool
- Patent Title (中): 开关清洁工具
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Application No.: US53342444Application Date: 1944-04-29
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Publication No.: US2503558APublication Date: 1950-04-11
- Inventor: MESCH ORWAR S A
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US53342444 1944-04-29
- Main IPC: H04Q1/20
- IPC: H04Q1/20
Information query
