Invention Grant
- Patent Title: Electric projection lamp
- Patent Title (中): 电投灯
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Application No.: US67573433Application Date: 1933-06-14
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Publication No.: US1979968APublication Date: 1934-11-06
- Inventor: GEIGER WALTER J , GASKILL ALFRED T
- Applicant: GEN ELECTRIC
- Assignee: Gen Electric
- Current Assignee: Gen Electric
- Priority: US67573433 1933-06-14
- Main IPC: F21V19/00
- IPC: F21V19/00
Information query
