FR425667A - Système d'écouteurs microphoniques sous-marins - Google Patents

Système d'écouteurs microphoniques sous-marins

Info

Publication number
FR425667A
FR425667A FR425667DA FR425667A FR 425667 A FR425667 A FR 425667A FR 425667D A FR425667D A FR 425667DA FR 425667 A FR425667 A FR 425667A
Authority
FR
France
Prior art keywords
headphone system
underwater microphone
microphone headphone
underwater
microphone
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)
Inventor
Charles Dutertre
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.)
CHARLES DUTERTRE
Original Assignee
CHARLES DUTERTRE
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 CHARLES DUTERTRE filed Critical CHARLES DUTERTRE
Application granted granted Critical
Publication of FR425667A publication Critical patent/FR425667A/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)
FR425667D 1911-02-04 1911-02-04 Système d'écouteurs microphoniques sous-marins Expired FR425667A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR425667T 1911-02-04

Publications (1)

Publication Number Publication Date
FR425667A true FR425667A (fr) 1911-06-16

Family

ID=1468307

Family Applications (1)

Application Number Title Priority Date Filing Date
FR425667D Expired FR425667A (fr) 1911-02-04 1911-02-04 Système d'écouteurs microphoniques sous-marins

Country Status (1)

Country Link
FR (1) FR425667A (fr)

Similar Documents

Publication Publication Date Title
FR425667A (fr) Système d'écouteurs microphoniques sous-marins
FR443935A (fr) Système d'éclateur
FR462059A (fr) Système décohéreur pour microphones sous-marins et autres
FR448217A (fr) Système téléphonique
FR449234A (fr) Système téléphonique
FR451691A (fr) Système téléphonique
DK15209C (da) Undersøisk Lydsignalapparat.
FR433236A (fr) Microphone
FR443236A (fr) Microphone
CH54931A (de) Mikrophon
FR422010A (fr) Système de microphone
FR435001A (fr) Microphone différentiel
FR450768A (fr) Système téléphonique haut parleur
FR439370A (fr) Système d'éclateur
FR435892A (fr) Signal auditif sous-marin
FR457819A (fr) Système téléphonique
FR458406A (fr) Système téléphonique
FR460594A (fr) Système téléphonique
FR461537A (fr) Système téléphonique
FR470383A (fr) Système téléphonique
FR474512A (fr) Système d'hydroplane
FR445726A (fr) Perfectionnements aux microphones
DK29920C (da) Undervandslydanlæg.
FR472948A (fr) Système téléphonique central
FR460600A (fr) Système central téléphonique