AT27625B - Kopfresonanz-Mikrotelephon. - Google Patents

Kopfresonanz-Mikrotelephon.

Info

Publication number
AT27625B
AT27625B AT27625DA AT27625B AT 27625 B AT27625 B AT 27625B AT 27625D A AT27625D A AT 27625DA AT 27625 B AT27625 B AT 27625B
Authority
AT
Austria
Prior art keywords
head resonance
resonance microphone
microphone
head
resonance
Prior art date
Application number
Other languages
English (en)
Inventor
Gustav Hellfritsch
Original Assignee
Gustav Hellfritsch
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
Priority claimed from DE1905168947D external-priority patent/DE168947C/de
Application filed by Gustav Hellfritsch filed Critical Gustav Hellfritsch
Application granted granted Critical
Publication of AT27625B publication Critical patent/AT27625B/de

Links

AT27625D 1905-04-15 1906-04-12 Kopfresonanz-Mikrotelephon. AT27625B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1905168947D DE168947C (de) 1905-04-15 1905-04-15

Publications (1)

Publication Number Publication Date
AT27625B true AT27625B (de) 1907-02-25

Family

ID=5687504

Family Applications (1)

Application Number Title Priority Date Filing Date
AT27625D AT27625B (de) 1905-04-15 1906-04-12 Kopfresonanz-Mikrotelephon.

Country Status (1)

Country Link
AT (1) AT27625B (de)

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