Invention Grant
- Patent Title: Apparatus for producing a hollow electron beam
- Patent Title (中): 用于制造中空电子束的装置
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Application No.: US48137555Application Date: 1955-01-12
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Publication No.: US2803772APublication Date: 1957-08-20
- Inventor: WEBSTER HAROLD F
- Applicant: GEN ELECTRIC
- Assignee: Gen Electric
- Current Assignee: Gen Electric
- Priority: US48137555 1955-01-12
- Main IPC: H01J3/02
- IPC: H01J3/02 ; H01J25/38
Information query
