FR737115A - Appareil d'écoute - Google Patents

Appareil d'écoute

Info

Publication number
FR737115A
FR737115A FR737115DA FR737115A FR 737115 A FR737115 A FR 737115A FR 737115D A FR737115D A FR 737115DA FR 737115 A FR737115 A FR 737115A
Authority
FR
France
Prior art keywords
listening device
listening
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anciens Etablissements Sautter Harle
Original Assignee
Anciens Etablissements Sautter Harle
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 Anciens Etablissements Sautter Harle filed Critical Anciens Etablissements Sautter Harle
Application granted granted Critical
Publication of FR737115A publication Critical patent/FR737115A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR737115D 1931-09-10 1931-09-10 Appareil d'écoute Expired FR737115A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR737115T 1931-09-10

Publications (1)

Publication Number Publication Date
FR737115A true FR737115A (fr) 1932-12-07

Family

ID=9131595

Family Applications (1)

Application Number Title Priority Date Filing Date
FR737115D Expired FR737115A (fr) 1931-09-10 1931-09-10 Appareil d'écoute

Country Status (1)

Country Link
FR (1) FR737115A (fr)

Similar Documents

Publication Publication Date Title
FR726041A (fr) Appareil d'injection perfectionné
FR733600A (fr) Appareil à dessiner
FR705668A (fr) Appareil poseur d'agrafes
FR719048A (fr) Appareil d'arrosage
FR737115A (fr) Appareil d'écoute
FR732233A (fr) Appareil de publicité
FR731359A (fr) Appareil d'agrandissement
FR727233A (fr) Appareil d'amusement
FR764497A (fr) Nouvel appareil d'électroculture
FR747213A (fr) Appareil duplicateur
FR689066A (fr) Appareil d'électro-culture
FR747533A (fr) Appareil d'encollage perfectionné
FR715883A (fr) Appareil de sauvetage
FR735152A (fr) Appareil ausculto-percuteur
FR739539A (fr) Appareil débourbeur-désintégrateur-malaxeur
FR727832A (fr) Appareil fumivore
FR714118A (fr) Appareil chiffrier-balance-comptable
FR709848A (fr) Appareil générateur d'ozone
FR724137A (fr) Appareil d'inhalation
FR724154A (fr) Appareil anti-retour de flammes
FR719970A (fr) Appareil rafraichir d'aisseur
FR802836A (fr) Appareil d'écoute
FR751101A (fr) Appareil thérapeutique
BE384438A (fr) Appareil enregistreur
FR46799E (fr) Nouvel appareil d'électroculture