Invention Grant
- Patent Title: Instantaneous electric water heater
- Patent Title (中): 瞬时电热水器
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Application No.: US62438932Application Date: 1932-07-25
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Publication No.: US1957070APublication Date: 1934-05-01
- Inventor: LOUIS LUDWIG
- Applicant: LOUIS LUDWIG
- Assignee: Ludwig Louis
- Current Assignee: Ludwig Louis
- Priority: US62438932 1932-07-25
- Main IPC: F24H1/10
- IPC: F24H1/10
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