FR2112496B1 - - Google Patents

Info

Publication number
FR2112496B1
FR2112496B1 FR7139697A FR7139697A FR2112496B1 FR 2112496 B1 FR2112496 B1 FR 2112496B1 FR 7139697 A FR7139697 A FR 7139697A FR 7139697 A FR7139697 A FR 7139697A FR 2112496 B1 FR2112496 B1 FR 2112496B1
Authority
FR
France
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
FR7139697A
Other versions
FR2112496A1 (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.)
Petty-Ray Geophysical Inc
Original Assignee
Petty-Ray Geophysical Inc
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 Petty-Ray Geophysical Inc filed Critical Petty-Ray Geophysical Inc
Publication of FR2112496A1 publication Critical patent/FR2112496A1/fr
Application granted granted Critical
Publication of FR2112496B1 publication Critical patent/FR2112496B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/08—Networks for phase shifting
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/02—Generating seismic energy
    • G01V1/04—Details

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Acoustics & Sound (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Velocity Or Acceleration (AREA)
FR7139697A 1970-11-06 1971-11-05 Expired FR2112496B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8739070A 1970-11-06 1970-11-06

Publications (2)

Publication Number Publication Date
FR2112496A1 FR2112496A1 (fr) 1972-06-16
FR2112496B1 true FR2112496B1 (fr) 1978-01-06

Family

ID=22204904

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7139697A Expired FR2112496B1 (fr) 1970-11-06 1971-11-05

Country Status (7)

Country Link
US (1) US3626267A (fr)
AU (1) AU454098B2 (fr)
BR (1) BR7107401D0 (fr)
CA (1) CA955315A (fr)
DE (1) DE2155128C3 (fr)
FR (1) FR2112496B1 (fr)
GB (1) GB1325148A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917987A (en) * 1973-12-28 1975-11-04 Fujitsu Ltd Voice coil motor control system
US4068210A (en) * 1976-04-07 1978-01-10 Standard Oil Company (Indiana) Seismic vibrator phase detector
US4300083A (en) * 1977-07-05 1981-11-10 Automation Devices, Inc. Constant amplitude controller and method
US4637307A (en) * 1983-09-13 1987-01-20 Genicom Corporation Automatic mechanical resonant frequency detector and driver for shuttle printer mechanism
GB8417241D0 (en) * 1984-07-06 1984-08-08 Unilever Plc Transducers and control means
US5212434A (en) * 1992-03-17 1993-05-18 National Science Counsil Phase-locked step motor speed servo controller
US10514474B2 (en) * 2013-09-19 2019-12-24 Conocophillips Company Method for synchronizing continuous seismic survey

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3439336A (en) * 1965-09-29 1969-04-15 Vyzk Ustav Matemat Stroju Digital comparator
US3548282A (en) * 1969-01-27 1970-12-15 Security Trust Co Of Rochester Control system for motor velocity and position
US3564379A (en) * 1969-07-02 1971-02-16 Gen Electric Automatic position inspector

Also Published As

Publication number Publication date
DE2155128A1 (de) 1972-05-25
BR7107401D0 (pt) 1973-04-10
AU454098B2 (en) 1974-10-17
FR2112496A1 (fr) 1972-06-16
US3626267A (en) 1971-12-07
CA955315A (en) 1974-09-24
DE2155128B2 (de) 1973-08-02
DE2155128C3 (de) 1974-02-28
GB1325148A (en) 1973-08-01
AU3485871A (en) 1973-05-03

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Legal Events

Date Code Title Description
CD Change of name or company name
TP Transmission of property
CD Change of name or company name
ST Notification of lapse