AT121372B - Hilfsgerät für Sprechmaschinen. - Google Patents

Hilfsgerät für Sprechmaschinen.

Info

Publication number
AT121372B
AT121372B AT121372DA AT121372B AT 121372 B AT121372 B AT 121372B AT 121372D A AT121372D A AT 121372DA AT 121372 B AT121372 B AT 121372B
Authority
AT
Austria
Prior art keywords
auxiliary device
speaking machines
speaking
machines
auxiliary
Prior art date
Application number
Other languages
English (en)
Inventor
Paul Spiegel
Original Assignee
Paul Spiegel
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 Paul Spiegel filed Critical Paul Spiegel
Application granted granted Critical
Publication of AT121372B publication Critical patent/AT121372B/de

Links

AT121372D 1929-03-30 1929-09-09 Hilfsgerät für Sprechmaschinen. AT121372B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE121372X 1929-03-30

Publications (1)

Publication Number Publication Date
AT121372B true AT121372B (de) 1931-02-25

Family

ID=5656890

Family Applications (1)

Application Number Title Priority Date Filing Date
AT121372D AT121372B (de) 1929-03-30 1929-09-09 Hilfsgerät für Sprechmaschinen.

Country Status (1)

Country Link
AT (1) AT121372B (de)

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