FR446342A - Improvements to processes and apparatus suitable for discovering sounds - Google Patents

Improvements to processes and apparatus suitable for discovering sounds

Info

Publication number
FR446342A
FR446342A FR446342A FR446342DA FR446342A FR 446342 A FR446342 A FR 446342A FR 446342 A FR446342 A FR 446342A FR 446342D A FR446342D A FR 446342DA FR 446342 A FR446342 A FR 446342A
Authority
FR
France
Prior art keywords
discovering
sounds
processes
apparatus suitable
discovering sounds
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
FR446342A
Other languages
French (fr)
Inventor
Frank Della Torre
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR446342A publication Critical patent/FR446342A/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)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
FR446342A 1912-07-15 1912-07-22 Improvements to processes and apparatus suitable for discovering sounds Expired FR446342A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191216485T 1912-07-15

Publications (1)

Publication Number Publication Date
FR446342A true FR446342A (en) 1912-12-02

Family

ID=32641890

Family Applications (1)

Application Number Title Priority Date Filing Date
FR446342A Expired FR446342A (en) 1912-07-15 1912-07-22 Improvements to processes and apparatus suitable for discovering sounds

Country Status (2)

Country Link
FR (1) FR446342A (en)
GB (1) GB191216485A (en)

Also Published As

Publication number Publication date
GB191216485A (en) 1913-02-13

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