CA236037A - Emission dirigee des sons - Google Patents

Emission dirigee des sons

Info

Publication number: CA236037A
Authority: CA; Canada
Prior art keywords: sound transmission; directive sound; directive; transmission; sound
Prior art date: 1923-11-27
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

CA236037A

Other languages

English (en)

Inventor

C. Hayes Harvey

Mason Max

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.)

Individual

Original Assignee

Individual

Publication date

1923-11-27

1923-11-27 Application granted granted Critical

1923-11-27 Publication of CA236037A publication Critical patent/CA236037A/fr

Status Expired legal-status Critical Current

Links

230000005540 biological transmission Effects 0.000 title 1

CA236037A Emission dirigee des sons Expired CA236037A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA236037T

Publications (1)

Publication Number	Publication Date
CA236037A true CA236037A (fr)	1923-11-27

Family

ID=35133411

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA236037A Expired CA236037A (fr)			Emission dirigee des sons

Country Status (1)

Country	Link
CA (1)	CA236037A (fr)

0
- CA CA236037A patent/CA236037A/fr not_active Expired

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