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FR515754A - Device for acoustic vibratory devices - Google Patents

Device for acoustic vibratory devices

Info

Publication number
FR515754A
FR515754A FR515754A FR515754DA FR515754A FR 515754 A FR515754 A FR 515754A FR 515754 A FR515754 A FR 515754A FR 515754D A FR515754D A FR 515754DA FR 515754 A FR515754 A FR 515754A
Authority
FR
France
Prior art keywords
vibratory devices
acoustic vibratory
acoustic
devices
vibratory
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
FR515754A
Other languages
French (fr)
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 FR515754A publication Critical patent/FR515754A/en
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)
FR515754A 1915-10-23 1920-05-19 Device for acoustic vibratory devices Expired FR515754A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE515754X 1915-10-23

Publications (1)

Publication Number Publication Date
FR515754A true FR515754A (en) 1921-04-07

Family

ID=6549078

Family Applications (1)

Application Number Title Priority Date Filing Date
FR515754A Expired FR515754A (en) 1915-10-23 1920-05-19 Device for acoustic vibratory devices

Country Status (1)

Country Link
FR (1) FR515754A (en)

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