CA280405A - Systeme de signalisation par ondes electriques - Google Patents

Systeme de signalisation par ondes electriques

Info

Publication number: CA280405A
Authority: CA; Canada
Prior art keywords: electric wave; signalling system; wave signalling; electric; wave
Prior art date: 1928-05-22
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

CA280405A

Other languages

English (en)

Inventor

M. Ryan Francis

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

1928-05-22

1928-05-22 Application granted granted Critical

1928-05-22 Publication of CA280405A publication Critical patent/CA280405A/fr

Status Expired legal-status Critical Current

Links

230000011664 signaling Effects 0.000 title 1

CA280405A Systeme de signalisation par ondes electriques Expired CA280405A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA280405T

Publications (1)

Publication Number	Publication Date
CA280405A true CA280405A (fr)	1928-05-22

Family

ID=35213497

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA280405A Expired CA280405A (fr)			Systeme de signalisation par ondes electriques

Country Status (1)

Country	Link
CA (1)	CA280405A (fr)

0
- CA CA280405A patent/CA280405A/fr not_active Expired

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