Invention Grant
- Patent Title: Indicating dial for photoelectric light meters
- Patent Title (中): 光电表的指示盘
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Application No.: US64474946Application Date: 1946-02-01
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Publication No.: US2421504APublication Date: 1947-06-03
- Inventor: HICKOK ROBERT D
- Applicant: CLEVELAND PATENTS INC
- Assignee: Cleveland Patents Inc
- Current Assignee: Cleveland Patents Inc
- Priority: US64474946 1946-02-01
- Main IPC: G01J1/42
- IPC: G01J1/42
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