DE280451C - - Google Patents

Info

Publication number
DE280451C
DE280451C DENDAT280451D DE280451DA DE280451C DE 280451 C DE280451 C DE 280451C DE NDAT280451 D DENDAT280451 D DE NDAT280451D DE 280451D A DE280451D A DE 280451DA DE 280451 C DE280451 C DE 280451C
Authority
DE
Germany
Prior art keywords
tuning fork
side wall
coupling
prong
ship
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.)
Active
Application number
DENDAT280451D
Other languages
German (de)
English (en)
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.)
Publication of DE280451C publication Critical patent/DE280451C/de
Active 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)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Building Environments (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
DENDAT280451D 1912-12-18 Active DE280451C (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE191302185X 1912-12-18

Publications (1)

Publication Number Publication Date
DE280451C true DE280451C (fr)

Family

ID=32657973

Family Applications (2)

Application Number Title Priority Date Filing Date
DENDAT280081D Active DE280081C (fr) 1912-12-18
DENDAT280451D Active DE280451C (fr) 1912-12-18

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DENDAT280081D Active DE280081C (fr) 1912-12-18

Country Status (4)

Country Link
DE (2) DE280451C (fr)
FR (4) FR453710A (fr)
GB (2) GB191302185A (fr)
NL (1) NL9568C (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3070774A (en) * 1952-03-26 1962-12-25 Bernstein Bernard Split ring electroacoustic transducer
EP0451161A1 (fr) * 1989-01-02 1991-10-16 Ingo Ritsch Fond ignifuge en poutres de bois

Also Published As

Publication number Publication date
GB191329221A (en) 1914-05-14
NL9568C (fr)
GB191302185A (en) 1913-03-06
DE280081C (fr)
FR453710A (fr) 1913-06-14
FR453711A (fr) 1913-06-14
FR23488E (fr) 1921-11-30
FR18527E (fr) 1914-05-13

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