CH26636A - Sprechrohr für Telephonapparate - Google Patents

Sprechrohr für Telephonapparate

Info

Publication number
CH26636A
CH26636A CH26636A CH26636DA CH26636A CH 26636 A CH26636 A CH 26636A CH 26636 A CH26636 A CH 26636A CH 26636D A CH26636D A CH 26636DA CH 26636 A CH26636 A CH 26636A
Authority
CH
Switzerland
Prior art keywords
telephone sets
speaking tube
speaking
tube
telephone
Prior art date
Application number
CH26636A
Other languages
English (en)
Inventor
Wilhelm Moenninghoff Friedrich
Original Assignee
Wilhelm Moenninghoff Friedrich
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 Wilhelm Moenninghoff Friedrich filed Critical Wilhelm Moenninghoff Friedrich
Publication of CH26636A publication Critical patent/CH26636A/de

Links

CH26636A 1902-05-14 1902-05-14 Sprechrohr für Telephonapparate CH26636A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH26636T 1902-05-14

Publications (1)

Publication Number Publication Date
CH26636A true CH26636A (de) 1903-09-30

Family

ID=4238773

Family Applications (1)

Application Number Title Priority Date Filing Date
CH26636A CH26636A (de) 1902-05-14 1902-05-14 Sprechrohr für Telephonapparate

Country Status (1)

Country Link
CH (1) CH26636A (de)

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