AU1581123A - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number: AU1581123A
Authority: AU; Australia
Prior art keywords: telephone systems; telephone; systems
Prior art date: 1923-12-31
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

AU15811/23A

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.)

WESTERN ELECTRIC Co Ltd

Original Assignee

WESTERN ELECTRIC Co Ltd

Filing date

1923-12-31

Publication date

1924-11-01

1923-12-31 Application filed by WESTERN ELECTRIC Co Ltd filed Critical WESTERN ELECTRIC Co Ltd

1924-11-01 Publication of AU1581123A publication Critical patent/AU1581123A/en

Status Expired legal-status Critical Current

Links

AU15811/23A 1923-12-31 Improvements in telephone systems Expired AU1581123A (en)

Publications (1)

Publication Number	Publication Date
AU1581123A true AU1581123A (en)	1924-11-01

Family

ID=

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