CH21823A - Grain microphone - Google Patents

Grain microphone

Info

Publication number
CH21823A
CH21823A CH21823A CH21823DA CH21823A CH 21823 A CH21823 A CH 21823A CH 21823 A CH21823 A CH 21823A CH 21823D A CH21823D A CH 21823DA CH 21823 A CH21823 A CH 21823A
Authority
CH
Switzerland
Prior art keywords
microphone
grain
grain microphone
Prior art date
Application number
CH21823A
Other languages
German (de)
Inventor
Aktiengesells Telegraphenwerke
Original Assignee
Mix & Genest Telephon U Telegr
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 Mix & Genest Telephon U Telegr filed Critical Mix & Genest Telephon U Telegr
Publication of CH21823A publication Critical patent/CH21823A/en

Links

CH21823A 1900-05-28 1900-05-28 Grain microphone CH21823A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH21823T 1900-05-28

Publications (1)

Publication Number Publication Date
CH21823A true CH21823A (en) 1901-10-15

Family

ID=4227792

Family Applications (1)

Application Number Title Priority Date Filing Date
CH21823A CH21823A (en) 1900-05-28 1900-05-28 Grain microphone

Country Status (1)

Country Link
CH (1) CH21823A (en)

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