FR538400A - Appareil sonore à fort amortissement - Google Patents

Appareil sonore à fort amortissement

Info

Publication number
FR538400A
FR538400A FR538400DA FR538400A FR 538400 A FR538400 A FR 538400A FR 538400D A FR538400D A FR 538400DA FR 538400 A FR538400 A FR 538400A
Authority
FR
France
Prior art keywords
sound device
high damping
damping sound
sound
damping
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.)
Signal GmbH
Original Assignee
Signal GmbH
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 Signal GmbH filed Critical Signal GmbH
Application granted granted Critical
Publication of FR538400A publication Critical patent/FR538400A/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)
FR538400D 1916-03-03 1920-07-02 Appareil sonore à fort amortissement Expired FR538400A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE538400X 1916-03-03

Publications (1)

Publication Number Publication Date
FR538400A true FR538400A (fr) 1922-06-08

Family

ID=6558120

Family Applications (1)

Application Number Title Priority Date Filing Date
FR538400D Expired FR538400A (fr) 1916-03-03 1920-07-02 Appareil sonore à fort amortissement

Country Status (1)

Country Link
FR (1) FR538400A (fr)

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