CA204990A - Dispositif d etube a vide - Google Patents

Dispositif d etube a vide

Info

Publication number: CA204990A
Authority: CA; Canada
Prior art keywords: vacuum tube; tube device; vacuum; tube
Prior art date: 1920-10-19
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

CA204990A

Other languages

English (en)

Inventor

R. Stockly Erwin

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

INTERNATIONAL WESTERN ELECTRIC CO

AT&T Corp

Original Assignee

INTERNATIONAL WESTERN ELECTRIC CO

Western Electric Co Inc

Publication date

1920-10-19

1920-10-19 Application granted granted Critical

1920-10-19 Publication of CA204990A publication Critical patent/CA204990A/fr

Status Expired legal-status Critical Current

Links

CA204990A Dispositif d etube a vide Expired CA204990A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA204990T

Publications (1)

Publication Number	Publication Date
CA204990A true CA204990A (fr)	1920-10-19

Family

ID=35098769

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA204990A Expired CA204990A (fr)			Dispositif d etube a vide

Country Status (1)

Country	Link
CA (1)	CA204990A (fr)

0
- CA CA204990A patent/CA204990A/fr not_active Expired

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