DK56184C - Akustisk Signalapparat. - Google Patents

Akustisk Signalapparat.

Info

Publication number
DK56184C
DK56184C DK56184DA DK56184C DK 56184 C DK56184 C DK 56184C DK 56184D A DK56184D A DK 56184DA DK 56184 C DK56184 C DK 56184C
Authority
DK
Denmark
Prior art keywords
acoustic signal
signal apparatus
acoustic
signal
Prior art date
Application number
Other languages
English (en)
Inventor
Olof Ingemar Harald Ekman
Original Assignee
Olof Ingemar Harald Ekman
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 Olof Ingemar Harald Ekman filed Critical Olof Ingemar Harald Ekman
Application granted granted Critical
Publication of DK56184C publication Critical patent/DK56184C/da

Links

DK56184D 1937-12-04 1937-12-04 Akustisk Signalapparat. DK56184C (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK56184T 1937-12-04

Publications (1)

Publication Number Publication Date
DK56184C true DK56184C (da) 1939-05-15

Family

ID=8143977

Family Applications (1)

Application Number Title Priority Date Filing Date
DK56184D DK56184C (da) 1937-12-04 1937-12-04 Akustisk Signalapparat.

Country Status (1)

Country Link
DK (1) DK56184C (da)

Similar Documents

Publication Publication Date Title
CH207880A (de) Schallwiedergabeanordnung.
CH205239A (de) Schallaufnahmevorrichtung.
FR920293A (fr) Microphone
CH202825A (fr) Cannetière.
FR822162A (fr) Perfectionnements aux sièges
FR844299A (fr) Dispositifs acoustiques
DK56184C (da) Akustisk Signalapparat.
CH206321A (de) Verstärkerschaltung.
FR870882A (fr) Dispositif acoustique
CH196101A (de) Tischsignalapparat.
CH223659A (de) Verstärkeranordnung.
NL49023C (nl) Met luchtdruk werkende signaalhoorn.
FR837711A (fr) Signal acoustique
FR832479A (fr) Avertisseur acoustique
CH203255A (de) Extensionsvorrichtung.
GR6713B (el) Κυψελη.
DK56398C (da) Sirene.
GR7204B (el) Σειρην.
AT156065B (de) Lautsprecher.
FI20273A (fi) Sirén
DK57778C (da) Signalapparat med Klokkespillyd.
AT158031B (de) Alarmeinrichtung.
FI20150A (fi) Säkringsfrånskiljare resp. frånskiljare
DK56455C (da) Signallampe.
DK58224C (da) Højttaleranlæg med Lydføringer.