DK21880C - Telephone system with mechanical conversion. - Google Patents

Telephone system with mechanical conversion.

Info

Publication number
DK21880C
DK21880C DK21880DA DK21880C DK 21880 C DK21880 C DK 21880C DK 21880D A DK21880D A DK 21880DA DK 21880 C DK21880 C DK 21880C
Authority
DK
Denmark
Prior art keywords
telephone system
mechanical conversion
conversion
mechanical
telephone
Prior art date
Application number
Other languages
Danish (da)
Original Assignee
Bell Telephone Mfg
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.)
Publication date
Application granted granted Critical
Publication of DK21880C publication Critical patent/DK21880C/en

Links

DK21880D 1913-03-06 Telephone system with mechanical conversion. DK21880C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21880X 1913-03-06

Publications (1)

Publication Number Publication Date
DK21880C true DK21880C (en) 1917-02-05

Family

ID=27839523

Family Applications (1)

Application Number Title Priority Date Filing Date
DK21880D DK21880C (en) 1913-03-06 Telephone system with mechanical conversion.

Country Status (1)

Country Link
DK (1) DK21880C (en)

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