Invention Grant
- Patent Title: Electrical system and apparatus
- Patent Title (中): 电气系统和设备
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Application No.: US9822026Application Date: 1926-03-29
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Publication No.: US2133643APublication Date: 1938-10-18
- Inventor: PIERCE GEORGE W
- Applicant: PIERCE GEORGE W
- Assignee: George W Pierce
- Current Assignee: George W Pierce
- Priority: US9822026 1926-03-29
- Main IPC: H03H9/10
- IPC: H03H9/10
Information query
