SU32381A1 - Acoustic signaling device - Google Patents

Acoustic signaling device

Info

Publication number
SU32381A1
SU32381A1 SU121272A SU121272A SU32381A1 SU 32381 A1 SU32381 A1 SU 32381A1 SU 121272 A SU121272 A SU 121272A SU 121272 A SU121272 A SU 121272A SU 32381 A1 SU32381 A1 SU 32381A1
Authority
SU
USSR - Soviet Union
Prior art keywords
signaling device
acoustic signaling
acoustic
spark
type
Prior art date
Application number
SU121272A
Other languages
Russian (ru)
Inventor
И.И. Ленке
Original Assignee
И.И. Ленке
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 И.И. Ленке filed Critical И.И. Ленке
Priority to SU121272A priority Critical patent/SU32381A1/en
Application granted granted Critical
Publication of SU32381A1 publication Critical patent/SU32381A1/en

Links

Landscapes

  • Interface Circuits In Exchanges (AREA)

Description

568568

Тип. «ИскраType of. "Spark

SU121272A 1932-12-31 1932-12-31 Acoustic signaling device SU32381A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU121272A SU32381A1 (en) 1932-12-31 1932-12-31 Acoustic signaling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU121272A SU32381A1 (en) 1932-12-31 1932-12-31 Acoustic signaling device

Publications (1)

Publication Number Publication Date
SU32381A1 true SU32381A1 (en) 1933-09-30

Family

ID=48349561

Family Applications (1)

Application Number Title Priority Date Filing Date
SU121272A SU32381A1 (en) 1932-12-31 1932-12-31 Acoustic signaling device

Country Status (1)

Country Link
SU (1) SU32381A1 (en)

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