CA444890A - Appareil de signal sonore - Google Patents

Appareil de signal sonore

Info

Publication number: CA444890A
Authority: CA; Canada
Prior art keywords: sound signal; signal apparatus; sound; signal
Prior art date: 1947-11-04
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

CA444890A

Other languages

English (en)

Inventor

Richards Mackay John

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.)

WALLACE AND TIERNAN PRODUCTS

Original Assignee

WALLACE AND TIERNAN PRODUCTS

Publication date

1947-11-04

1947-11-04 Application granted granted Critical

1947-11-04 Publication of CA444890A publication Critical patent/CA444890A/fr

Status Expired legal-status Critical Current

Links

230000005236 sound signal Effects 0.000 title 1

CA444890A Appareil de signal sonore Expired CA444890A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA444890T

Publications (1)

Publication Number	Publication Date
CA444890A true CA444890A (fr)	1947-11-04

Family

ID=35562541

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA444890A Expired CA444890A (fr)			Appareil de signal sonore

Country Status (1)

Country	Link
CA (1)	CA444890A (fr)

0
- CA CA444890A patent/CA444890A/fr not_active Expired

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