FI20992A - Multiple telephone system - Google Patents

Multiple telephone system

Info

Publication number
FI20992A
FI20992A FI20992DA FI20992A FI 20992 A FI20992 A FI 20992A FI 20992D A FI20992D A FI 20992DA FI 20992 A FI20992 A FI 20992A
Authority
FI
Finland
Prior art keywords
telephone system
multiple telephone
telephone
Prior art date
Application number
Other languages
Finnish (fi)
Inventor
Wolf Menno
Original Assignee
Philips Nv
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.)
Filing date
Publication date
Application filed by Philips Nv filed Critical Philips Nv
Publication of FI20992A publication Critical patent/FI20992A/en

Links

FI20992D 1939-04-24 1939-04-24 Multiple telephone system FI20992A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20992T 1939-04-24

Publications (1)

Publication Number Publication Date
FI20992A true FI20992A (en) 1946-01-10

Family

ID=36882576

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20992D FI20992A (en) 1939-04-24 1939-04-24 Multiple telephone system

Country Status (1)

Country Link
FI (1) FI20992A (en)

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