CA538498A - Systemes telephoniques - Google Patents

Systemes telephoniques

Info

Publication number: CA538498A
Authority: CA; Canada
Prior art keywords: telephone systems; telephone; systems
Prior art date: 1957-03-19
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

CA538498A

Other languages

English (en)

Inventor

I. H. Clark Ronald

A. Stallworthy Frank

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.)

Siemens Brothers and Co Ltd

Original Assignee

Siemens Brothers and Co Ltd

Publication date

1957-03-19

1957-03-19 Application granted granted Critical

1957-03-19 Publication of CA538498A publication Critical patent/CA538498A/fr

Status Expired legal-status Critical Current

Links

CA538498A Systemes telephoniques Expired CA538498A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA538498T

Publications (1)

Publication Number	Publication Date
CA538498A true CA538498A (fr)	1957-03-19

Family

ID=35693137

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA538498A Expired CA538498A (fr)			Systemes telephoniques

Country Status (1)

Country	Link
CA (1)	CA538498A (fr)

0
- CA CA538498A patent/CA538498A/fr not_active Expired

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