AU111702B2 - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number: AU111702B2
Authority: AU; Australia
Prior art keywords: telephone systems; telephone; systems
Prior art date: 1939-10-05
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

AU4573/39A

Other versions

AU457339A (en

Inventor

Ernest Lomax Clarence

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.)

X Associated Electric Laboratories Inc

Original Assignee

X Associated Electric Laboratories Inc

Filing date

1939-10-05

Publication date

1940-10-24

1939-10-05 Application filed by X Associated Electric Laboratories Inc filed Critical X Associated Electric Laboratories Inc

1940-10-24 Application granted granted Critical

1940-10-24 Publication of AU111702B2 publication Critical patent/AU111702B2/en

1940-10-24 Publication of AU457339A publication Critical patent/AU457339A/en

Status Expired legal-status Critical Current

Links

AU4573/39A 1939-10-05 Improvements in telephone systems Expired AU111702B2 (en)

Publications (2)

Publication Number	Publication Date
AU111702B2 true AU111702B2 (en)	1940-10-24
AU457339A AU457339A (en)	1940-10-24

Family

ID=

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