FR51057E - Appareil de répérage par le son - Google Patents

Appareil de répérage par le son

Info

Publication number
FR51057E
FR51057E FR51057DA FR51057E FR 51057 E FR51057 E FR 51057E FR 51057D A FR51057D A FR 51057DA FR 51057 E FR51057 E FR 51057E
Authority
FR
France
Prior art keywords
tracking device
sound tracking
sound
tracking
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.)
Kodak Pathe SA
Original Assignee
Kodak Pathe SA
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 Kodak Pathe SA filed Critical Kodak Pathe SA
Application granted granted Critical
Publication of FR51057E publication Critical patent/FR51057E/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general
    • 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)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR51057D 1939-12-19 1939-12-19 Appareil de répérage par le son Expired FR51057E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR51057T 1939-12-19

Publications (1)

Publication Number Publication Date
FR51057E true FR51057E (fr) 1941-08-06

Family

ID=8685975

Family Applications (2)

Application Number Title Priority Date Filing Date
FR864172D Expired FR864172A (fr) 1939-12-19 1939-11-16 Appareil de repérage par le son
FR51057D Expired FR51057E (fr) 1939-12-19 1939-12-19 Appareil de répérage par le son

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR864172D Expired FR864172A (fr) 1939-12-19 1939-11-16 Appareil de repérage par le son

Country Status (1)

Country Link
FR (2) FR864172A (fr)

Also Published As

Publication number Publication date
FR864172A (fr) 1941-04-21

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