AU839813A - Improvements in semi-automatic telephone installations - Google Patents

Improvements in semi-automatic telephone installations

Info

Publication number: AU839813A
Authority: AU; Australia
Prior art keywords: semi; automatic telephone; telephone installations; installations; automatic
Prior art date: 1913-03-17
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

AU8398/13A

Other versions

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 and Halske AG

Original Assignee

Siemens and Halske AG

Filing date

1913-03-17

Publication date

1913-03-20

1913-03-17 Application filed by Siemens and Halske AG filed Critical Siemens and Halske AG

1913-03-20 Publication of AU839813A publication Critical patent/AU839813A/en

1913-11-25 Publication of AU839813B publication Critical patent/AU839813B/en

Status Expired legal-status Critical Current

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DES0035909		1912-03-19

Publications (2)

Publication Number	Publication Date
AU839813A true AU839813A (en)	1913-03-20
AU839813B AU839813B (en)	1913-11-25

Family

ID=62164822

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AU8398/13A Expired AU839813B (en)	1912-03-19	1913-03-17	Improvements in semi-automatic telephone installations

Country Status (3)

Country	Link
AT (2)	AT65338B (en)
AU (1)	AU839813B (en)
GB (3)	GB191306664A (en)

1913
- 1913-03-14 AT AT65338D patent/AT65338B/en active
- 1913-03-17 AU AU8398/13A patent/AU839813B/en not_active Expired
- 1913-03-18 GB GB191306664D patent/GB191306664A/en not_active Expired
- 1913-09-26 GB GB191321766D patent/GB191321766A/en not_active Expired
- 1913-10-21 AT AT67963D patent/AT67963B/en active
- 1913-10-28 GB GB191324459D patent/GB191324459A/en not_active Expired

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