Invention Grant
- Patent Title: Regulating transformer
- Patent Title (中): 调压变压器
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Application No.: US13912626Application Date: 1926-10-02
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Publication No.: US1771816APublication Date: 1930-07-29
- Inventor: WALDEMAR PETERSEN
- Applicant: WALDEMAR PETERSEN
- Assignee: Petersen Waldemar
- Current Assignee: Petersen Waldemar
- Priority: DE258885X 1925-09-23
- Main IPC: H01F29/02
- IPC: H01F29/02
Public/Granted literature
- US20140362092A1 LIGHT EMITTING DIODE (LED) BACKLIGHT WITH REDUCED HOTSPOT FORMATION Public/Granted day:2014-12-11
Information query
