AT116451B - Sound signal device. - Google Patents

Sound signal device.

Info

Publication number
AT116451B
AT116451B AT116451DA AT116451B AT 116451 B AT116451 B AT 116451B AT 116451D A AT116451D A AT 116451DA AT 116451 B AT116451 B AT 116451B
Authority
AT
Austria
Prior art keywords
sound signal
signal device
sound
signal
Prior art date
Application number
Other languages
German (de)
Inventor
Helge Sven Albert Ing Rydberg
Original Assignee
Helge Sven Albert Ing Rydberg
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 Helge Sven Albert Ing Rydberg filed Critical Helge Sven Albert Ing Rydberg
Application granted granted Critical
Publication of AT116451B publication Critical patent/AT116451B/en

Links

AT116451D 1927-12-10 1928-11-28 Sound signal device. AT116451B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE116451X 1927-12-10

Publications (1)

Publication Number Publication Date
AT116451B true AT116451B (en) 1930-02-25

Family

ID=5654706

Family Applications (1)

Application Number Title Priority Date Filing Date
AT116451D AT116451B (en) 1927-12-10 1928-11-28 Sound signal device.

Country Status (1)

Country Link
AT (1) AT116451B (en)

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