FR1022386A - Improvements to recording devices - Google Patents

Improvements to recording devices

Info

Publication number
FR1022386A
FR1022386A FR1022386DA FR1022386A FR 1022386 A FR1022386 A FR 1022386A FR 1022386D A FR1022386D A FR 1022386DA FR 1022386 A FR1022386 A FR 1022386A
Authority
FR
France
Prior art keywords
recording devices
recording
devices
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
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.)
Simrad AS
Original Assignee
Simonsen Radio AS
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 Simonsen Radio AS filed Critical Simonsen Radio AS
Application granted granted Critical
Publication of FR1022386A publication Critical patent/FR1022386A/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)
FR1022386D 1949-06-24 1950-06-23 Improvements to recording devices Expired FR1022386A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO1022386X 1949-06-24

Publications (1)

Publication Number Publication Date
FR1022386A true FR1022386A (en) 1953-03-04

Family

ID=19907960

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1022386D Expired FR1022386A (en) 1949-06-24 1950-06-23 Improvements to recording devices

Country Status (1)

Country Link
FR (1) FR1022386A (en)

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