ZA767342B - Apparatus for underwater emission of frequency modulated vibrations - Google Patents

Apparatus for underwater emission of frequency modulated vibrations

Info

Publication number
ZA767342B
ZA767342B ZA767342A ZA767342A ZA767342B ZA 767342 B ZA767342 B ZA 767342B ZA 767342 A ZA767342 A ZA 767342A ZA 767342 A ZA767342 A ZA 767342A ZA 767342 B ZA767342 B ZA 767342B
Authority
ZA
South Africa
Prior art keywords
frequency modulated
underwater emission
modulated vibrations
vibrations
underwater
Prior art date
Application number
ZA767342A
Other languages
English (en)
Inventor
G Renggli
Original Assignee
Efa Ag
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 Efa Ag filed Critical Efa Ag
Publication of ZA767342B publication Critical patent/ZA767342B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Physical Water Treatments (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
ZA767342A 1975-12-17 1976-12-09 Apparatus for underwater emission of frequency modulated vibrations ZA767342B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1634875A CH588789A5 (enrdf_load_html_response) 1975-12-17 1975-12-17

Publications (1)

Publication Number Publication Date
ZA767342B true ZA767342B (en) 1977-11-30

Family

ID=4416556

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA767342A ZA767342B (en) 1975-12-17 1976-12-09 Apparatus for underwater emission of frequency modulated vibrations

Country Status (13)

Country Link
JP (1) JPS5286761A (enrdf_load_html_response)
AU (1) AU504754B2 (enrdf_load_html_response)
BR (1) BR7608462A (enrdf_load_html_response)
CH (1) CH588789A5 (enrdf_load_html_response)
DE (1) DE2656969A1 (enrdf_load_html_response)
DK (1) DK565876A (enrdf_load_html_response)
ES (1) ES454180A1 (enrdf_load_html_response)
FI (1) FI763585A7 (enrdf_load_html_response)
FR (1) FR2336006A1 (enrdf_load_html_response)
GB (1) GB1513200A (enrdf_load_html_response)
NL (1) NL7613846A (enrdf_load_html_response)
NO (1) NO764241L (enrdf_load_html_response)
ZA (1) ZA767342B (enrdf_load_html_response)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5413748U (enrdf_load_html_response) * 1977-06-30 1979-01-29
GB2119980B (en) * 1982-05-11 1985-10-16 Madelyn Carrol Freeman A device for use by a diver to give a signal
DE59103450D1 (de) * 1991-01-04 1994-12-08 Joergen Brosow Verfahren und vorrichtung zum übertragen eines informationssignals.

Also Published As

Publication number Publication date
AU504754B2 (en) 1979-10-25
FI763585A7 (enrdf_load_html_response) 1977-06-18
FR2336006B3 (enrdf_load_html_response) 1979-01-19
CH588789A5 (enrdf_load_html_response) 1977-06-15
DK565876A (da) 1977-06-18
JPS5286761A (en) 1977-07-19
ES454180A1 (es) 1977-12-01
DE2656969A1 (de) 1977-07-07
NL7613846A (nl) 1977-06-21
NO764241L (enrdf_load_html_response) 1977-06-20
AU2046476A (en) 1978-06-15
GB1513200A (en) 1978-06-07
BR7608462A (pt) 1977-11-29
FR2336006A1 (fr) 1977-07-15

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