CA277770A - Systeme de signalisation par ondes - Google Patents

Systeme de signalisation par ondes

Info

Publication number: CA277770A
Authority: CA; Canada
Prior art keywords: signalling system; wave signalling; wave; signalling
Prior art date: 1928-02-07
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

CA277770A

Other languages

English (en)

Inventor

S. Black Harold

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

1928-02-07

1928-02-07 Application granted granted Critical

1928-02-07 Publication of CA277770A publication Critical patent/CA277770A/fr

Status Expired legal-status Critical Current

Links

230000011664 signaling Effects 0.000 title 1

CA277770A Systeme de signalisation par ondes Expired CA277770A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA277770T

Publications (1)

Publication Number	Publication Date
CA277770A true CA277770A (fr)	1928-02-07

Family

ID=35210861

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA277770A Expired CA277770A (fr)			Systeme de signalisation par ondes

Country Status (1)

Country	Link
CA (1)	CA277770A (fr)

0
- CA CA277770A patent/CA277770A/fr not_active Expired

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