Frequency meter

Invention Grant

US2133150A Frequency meter 失效

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Patent Title: Frequency meter
Application No.: US16636337

Application Date: 1937-09-29
Publication No.: US2133150A

Publication Date: 1938-10-11
Inventor: RICH THEODORE A
Applicant: GEN ELECTRIC
Assignee: Gen Electric
Current Assignee: Gen Electric
Priority: US16636337 1937-09-29
Main IPC: G01R23/02
IPC: G01R23/02

Frequency meter

Public/Granted literature

US11531219B2 Optical module having externally-mounted magnetic ring and chip positioning angle and pressing block structure thereof Public/Granted day:2022-12-20

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Espacenet

IPC分类:

G	物理
G01	测量；测试
G01R	测量电变量；测量磁变量（指示谐振电路的正确调谐入H03J3/12）
G01R23/00	测量频率的装置；频谱分析装置
G01R23/02	.频率测量装置，如脉冲重复率的测量；电流或电压周期的测量装置

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