DK33933C - Semi-automatic Telephone exchange system. - Google Patents

Semi-automatic Telephone exchange system.

Info

Publication number: DK33933C
Authority: DK; Denmark
Prior art keywords: semi; exchange system; telephone exchange; automatic telephone; automatic
Prior art date: 1918-07-22

Application number

Other languages

Original Assignee

Telefonapparatfabrikanterne Be

Priority date (The priority date 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 date listed.)

1918-07-22

Filing date

1919-08-02

Publication date

1924-12-08

1919-08-02 Application filed by Telefonapparatfabrikanterne Be filed Critical Telefonapparatfabrikanterne Be

1924-12-08 Application granted granted Critical

1924-12-08 Publication of DK33933C publication Critical patent/DK33933C/en

Links

DK33933D 1918-07-22 1919-08-02 Semi-automatic Telephone exchange system. DK33933C (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US33933XA	1918-07-22	1918-07-22

Publications (1)

Publication Number	Publication Date
DK33933C true DK33933C (en)	1924-12-08

Family

ID=21705651

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK33933D DK33933C (en)	1918-07-22	1919-08-02	Semi-automatic Telephone exchange system.

Country Status (1)

Country	Link
DK (1)	DK33933C (en)

1919
- 1919-08-02 DK DK33933D patent/DK33933C/en active

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