CA197355A - Tube a vide - Google Patents

Tube a vide

Info

Publication number: CA197355A
Authority: CA; Canada
Prior art keywords: vacuum tube; vacuum; tube
Prior art date: 1920-02-17
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

CA197355A

Other languages

English (en)

Inventor

E. Shreeve Herbert

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.)

AT&T Corp

Original Assignee

Western Electric Co Inc

Publication date

1920-02-17

1920-02-17 Application granted granted Critical

1920-02-17 Publication of CA197355A publication Critical patent/CA197355A/fr

Status Expired legal-status Critical Current

Links

CA197355A Tube a vide Expired CA197355A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA197355T

Publications (1)

Publication Number	Publication Date
CA197355A true CA197355A (fr)	1920-02-17

Family

ID=35071793

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA197355A Expired CA197355A (fr)			Tube a vide

Country Status (1)

Country	Link
CA (1)	CA197355A (fr)

0
- CA CA197355A patent/CA197355A/fr not_active Expired

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