AT116452B - Sound signaling device. - Google Patents

Sound signaling device.

Info

Publication number: AT116452B
Authority: AT; Austria
Prior art keywords: signaling device; sound signaling; sound; signaling
Prior art date: 1928-02-27

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.)

1928-02-27

Filing date

1928-11-28

Publication date

1930-02-25

1928-11-28 Application filed by Helge Sven Albert Ing Rydberg filed Critical Helge Sven Albert Ing Rydberg

1930-02-25 Application granted granted Critical

1930-02-25 Publication of AT116452B publication Critical patent/AT116452B/en

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE116452T		1928-02-27

Publications (1)

Publication Number	Publication Date
AT116452B true AT116452B (en)	1930-02-25

Family

ID=29276644

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AT116452D AT116452B (en)	1928-02-27	1928-11-28	Sound signaling device.

Country Status (1)

Country	Link
AT (1)	AT116452B (en)

1928
- 1928-11-28 AT AT116452D patent/AT116452B/en active

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