NO975784L - Anordning og fremgangsmåte ved seismisk signalprosessering og undersökelse - Google Patents

Anordning og fremgangsmåte ved seismisk signalprosessering og undersökelse

Info

Publication number
NO975784L
NO975784L NO975784A NO975784A NO975784L NO 975784 L NO975784 L NO 975784L NO 975784 A NO975784 A NO 975784A NO 975784 A NO975784 A NO 975784A NO 975784 L NO975784 L NO 975784L
Authority
NO
Norway
Prior art keywords
investigation
signal processing
seismic signal
seismic
processing
Prior art date
Application number
NO975784A
Other languages
English (en)
Other versions
NO975784D0 (no
NO319052B1 (no
Inventor
Adam Gersztenkorn
Original Assignee
Amoco Corp
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 Amoco Corp filed Critical Amoco Corp
Publication of NO975784D0 publication Critical patent/NO975784D0/no
Publication of NO975784L publication Critical patent/NO975784L/no
Publication of NO319052B1 publication Critical patent/NO319052B1/no

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
    • G01V1/32—Transforming one recording into another or one representation into another
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V2210/00—Details of seismic processing or analysis
    • G01V2210/40—Transforming data representation
    • G01V2210/48—Other transforms

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
NO19975784A 1996-04-12 1997-12-09 Anordning og fremgangsmate ved seismisk signalprosessering og undersokelse NO319052B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63178896A 1996-04-12 1996-04-12
PCT/US1997/000249 WO1997039367A1 (en) 1996-04-12 1997-01-02 Method and apparatus for seismic signal processing and exploration

Publications (3)

Publication Number Publication Date
NO975784D0 NO975784D0 (no) 1997-12-09
NO975784L true NO975784L (no) 1998-02-12
NO319052B1 NO319052B1 (no) 2005-06-13

Family

ID=24532737

Family Applications (1)

Application Number Title Priority Date Filing Date
NO19975784A NO319052B1 (no) 1996-04-12 1997-12-09 Anordning og fremgangsmate ved seismisk signalprosessering og undersokelse

Country Status (9)

Country Link
US (1) US5892732A (no)
EP (1) EP0832442B1 (no)
CN (1) CN1186647C (no)
AR (1) AR006341A1 (no)
AU (1) AU710968B2 (no)
CA (1) CA2220274C (no)
NO (1) NO319052B1 (no)
RU (1) RU2169931C2 (no)
WO (1) WO1997039367A1 (no)

Families Citing this family (107)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6765570B1 (en) * 1998-07-21 2004-07-20 Magic Earth, Inc. System and method for analyzing and imaging three-dimensional volume data sets using a three-dimensional sampling probe
FR2786294B1 (fr) * 1998-11-19 2000-12-22 Elf Exploration Prod Methode de detection de structures chaotiques dans un milieu donne
DE19904347C2 (de) 1999-02-03 2002-08-14 Henning Trappe Verfahren zur seismischen Datenverarbeitung
US6611609B1 (en) * 1999-04-09 2003-08-26 The Board Of Regents Of The University Of Nebraska Method of tracking changes in a multi-dimensional data structure
US6332037B1 (en) * 1999-04-09 2001-12-18 Board Of Regents Of The University Of Nebraska Invariant, Eigenvalue based, non-degenerate data structure characterization, storage and retrieval indexing method
US6625311B1 (en) 1999-04-09 2003-09-23 The Board Of Regents Of The University Of Nebraska Methodology for data structure characterization, indexing, storage and retrieval
DK1058131T3 (da) * 1999-06-03 2004-09-20 Jason Geosystems B V Fremgangsmåde til bestemmelse af rumlige ændringer i underjordisk struktur, stratigrafi, litologi og fluidum-indhold og reduktion af seismisk stöj
US6594585B1 (en) 1999-06-17 2003-07-15 Bp Corporation North America, Inc. Method of frequency domain seismic attribute generation
DE19933717C1 (de) * 1999-07-19 2001-01-11 Henning Trappe Verfahren zur seismischen Datenverarbeitung
DE19943325C2 (de) 1999-09-10 2001-12-13 Trappe Henning Verfahren zur Bearbeitung seismischer Meßdaten mit einem neuronalen Netzwerk
US6418381B1 (en) 1999-12-06 2002-07-09 Landmark Graphics Corp. Transformation method applied to seismic data traces
US6490526B2 (en) * 2000-03-20 2002-12-03 Exxonmobil Upstream Research Company Method for characterization of multi-scale geometric attributes
US6490528B2 (en) 2000-04-17 2002-12-03 Exxonmobil Upstream Research Company Method for imaging discontinuites in seismic data
CA2414631C (en) 2000-06-30 2008-09-30 Exxonmobil Upstream Research Company Method for imaging discontinuities in seismic data using dip-steering
US6571177B1 (en) 2000-09-18 2003-05-27 Conoco Inc. Color displays of multiple slices of 3-D seismic data
US7006085B1 (en) * 2000-10-30 2006-02-28 Magic Earth, Inc. System and method for analyzing and imaging three-dimensional volume data sets
US6487502B1 (en) 2000-12-01 2002-11-26 Rdsp I, L.P. System for estimating the locations of shaley subsurface formations
US6597994B2 (en) * 2000-12-22 2003-07-22 Conoco Inc. Seismic processing system and method to determine the edges of seismic data events
US6850845B2 (en) * 2001-07-20 2005-02-01 Tracy Joseph Stark System for multi-dimensional data analysis
US6597992B2 (en) 2001-11-01 2003-07-22 Soil And Topography Information, Llc Soil and topography surveying
US6766252B2 (en) 2002-01-24 2004-07-20 Halliburton Energy Services, Inc. High resolution dispersion estimation in acoustic well logging
CN101363917B (zh) * 2002-03-27 2011-03-02 维斯特恩格科有限责任公司 用于地震应用的参量fk技术
US20060122780A1 (en) * 2002-11-09 2006-06-08 Geoenergy, Inc Method and apparatus for seismic feature extraction
GB2403803B (en) 2003-07-05 2005-09-21 Westerngeco Ltd Processing seismic data
US7298376B2 (en) * 2003-07-28 2007-11-20 Landmark Graphics Corporation System and method for real-time co-rendering of multiple attributes
CA2485761C (en) * 2003-10-24 2015-11-24 Bernd Milkereit Resonance scattering seismic method
WO2006028501A2 (en) * 2004-02-26 2006-03-16 Saudi Arabian Oil Company Prediction of shallow drilling hazards using seismic refraction data
US8234923B2 (en) 2004-09-20 2012-08-07 Innervision Medical Technologies Inc. Systems and methods for ultrasound imaging
US7554883B2 (en) * 2004-10-11 2009-06-30 Landmark Graphics Corporation Fault filter for seismic discontinuity data
GB2422012B (en) * 2005-01-11 2008-09-10 Statoil Asa Method of seismic signal processing
GB2429278B (en) * 2005-08-15 2010-08-11 Statoil Asa Seismic exploration
US7914451B2 (en) * 2005-09-15 2011-03-29 Innervision Medical Technologies Inc. Determining attributes using ultrasound
US7333392B2 (en) 2005-09-19 2008-02-19 Saudi Arabian Oil Company Method for estimating and reconstructing seismic reflection signals
US8105239B2 (en) 2006-02-06 2012-01-31 Maui Imaging, Inc. Method and apparatus to visualize the coronary arteries using ultrasound
US8473239B2 (en) 2009-04-14 2013-06-25 Maui Imaging, Inc. Multiple aperture ultrasound array alignment fixture
CN101583911B (zh) 2006-09-01 2013-01-02 哈利伯顿兰德马克绘图公司 用于对波形体进行成像的***和方法
WO2008051639A2 (en) 2006-10-25 2008-05-02 Maui Imaging, Inc. Method and apparatus to produce ultrasonic images using multiple apertures
GB2443843B (en) * 2006-11-14 2011-05-25 Statoil Asa Seafloor-following streamer
EP2102823B8 (en) * 2007-01-05 2016-06-29 Landmark Graphics Corporation Systems and methods for visualizing multiple volumetric data sets in real time
CA2674820C (en) * 2007-01-05 2020-01-21 Landmark Graphics Corporation, A Halliburton Company Systems and methods for selectively imaging objects in a display of multiple three-dimensional data-objects
WO2008111037A2 (en) * 2007-03-12 2008-09-18 Geomage 2003 Ltd A method for identifying and analyzing faults/fractures using reflected and diffracted waves
GB2463591B (en) * 2007-05-17 2012-04-11 Spectraseis Ag Seismic attributes for reservoir localization
US7724608B2 (en) * 2007-07-20 2010-05-25 Wayne Simon Passive reflective imaging for visualizing subsurface structures in earth and water
US9171391B2 (en) 2007-07-27 2015-10-27 Landmark Graphics Corporation Systems and methods for imaging a volume-of-interest
US8768672B2 (en) * 2007-08-24 2014-07-01 ExxonMobil. Upstream Research Company Method for predicting time-lapse seismic timeshifts by computer simulation
US8548782B2 (en) 2007-08-24 2013-10-01 Exxonmobil Upstream Research Company Method for modeling deformation in subsurface strata
CA2690992C (en) * 2007-08-24 2014-07-29 Exxonmobil Upstream Research Company Method for predicting well reliability by computer simulation
WO2009029133A1 (en) * 2007-08-24 2009-03-05 Exxonmobil Upstream Research Company Method for multi-scale geomechanical model analysis by computer simulation
US7630865B2 (en) * 2007-09-11 2009-12-08 Geomage (2003) Ltd Complex analysis of kinematics for non-hyperbolic moveout corrections
US9339256B2 (en) 2007-10-01 2016-05-17 Maui Imaging, Inc. Determining material stiffness using multiple aperture ultrasound
US9788813B2 (en) 2010-10-13 2017-10-17 Maui Imaging, Inc. Multiple aperture probe internal apparatus and cable assemblies
US9282945B2 (en) * 2009-04-14 2016-03-15 Maui Imaging, Inc. Calibration of ultrasound probes
GB0722469D0 (en) 2007-11-16 2007-12-27 Statoil Asa Forming a geological model
US7702463B2 (en) 2007-12-12 2010-04-20 Landmark Graphics Corporation, A Halliburton Company Systems and methods for enhancing a seismic data image
GB0724847D0 (en) * 2007-12-20 2008-01-30 Statoilhydro Method of and apparatus for exploring a region below a surface of the earth
GB0803701D0 (en) * 2008-02-28 2008-04-09 Statoilhydro Asa Improved interferometric methods and apparatus for seismic exploration
US8209126B2 (en) * 2008-04-01 2012-06-26 Geo{umlaut over (m)}age (2003) Ltd. Wavefront-defined Radon transform
US8213261B2 (en) * 2008-05-22 2012-07-03 Exxonmobil Upstream Research Company Method for geophysical and geological interpretation of seismic volumes in the domains of depth, time, and age
WO2009142872A1 (en) * 2008-05-22 2009-11-26 Exxonmobil Upstream Research Company Seismic horizon skeletonization
EP2281278B1 (en) * 2008-06-06 2019-08-14 Landmark Graphics Corporation, A Halliburton Company Systems and methods for imaging a three-dimensional volume of geometrically irregular grid data representing a grid volume
EP2300933B1 (en) * 2008-06-09 2018-09-19 Landmark Graphics Corporation Distribution of properties in a 3d volumetric model using a maximum continuity field
CN102124374B (zh) * 2008-08-15 2013-07-17 Bp北美公司 用于分离单独的同时震源的方法
US20110297369A1 (en) * 2008-11-14 2011-12-08 Krishnan Kumaran Windowed Statistical Analysis For Anomaly Detection In Geophysical Datasets
US8463551B2 (en) * 2009-11-17 2013-06-11 Schlumberger Technology Corporation Consistent dip estimation for seismic imaging
KR102121040B1 (ko) 2010-02-18 2020-06-09 마우이 이미징, 인코포레이티드 초음파 이미지를 구성하는 방법 및 이를 위한 다중-개구 초음파 이미징 시스템
GB2479200A (en) 2010-04-01 2011-10-05 Statoil Asa Interpolating pressure and/or vertical particle velocity data from multi-component marine seismic data including horizontal derivatives
US8380435B2 (en) * 2010-05-06 2013-02-19 Exxonmobil Upstream Research Company Windowed statistical analysis for anomaly detection in geophysical datasets
US8757270B2 (en) 2010-05-28 2014-06-24 Statoil Petroleum As Subsea hydrocarbon production system
US8747325B2 (en) 2010-07-16 2014-06-10 Fundacao De Amparo A Pesquisa Do Estado De Sao Paulo (Fapesp) Non-invasive method for diagnosing the severity of heart failure by extracting and analyzing acetone concentrations in captured exhaled breath
EP2601574A1 (en) * 2010-08-05 2013-06-12 ExxonMobil Upstream Research Company Obtaining data from an earth model using functional decriptors
WO2012051308A2 (en) 2010-10-13 2012-04-19 Maui Imaging, Inc. Concave ultrasound transducers and 3d arrays
RU2458363C1 (ru) * 2011-03-16 2012-08-10 Сергей Алексеевич Бахарев Способ прямого поиска углеводородов
US8886503B2 (en) 2011-04-19 2014-11-11 Schlumberger Technology Corporation Discontinuity detection
EP2724181B1 (en) * 2011-06-24 2020-08-19 ION Geophysical Corporation Method and apparatus for seismic noise reduction
WO2013082455A1 (en) 2011-12-01 2013-06-06 Maui Imaging, Inc. Motion detection using ping-based and multiple aperture doppler ultrasound
US9265484B2 (en) 2011-12-29 2016-02-23 Maui Imaging, Inc. M-mode ultrasound imaging of arbitrary paths
US9542507B2 (en) 2012-02-23 2017-01-10 Schlumberger Technology Corporation Feature detection in seismic volumes
EP2833791B1 (en) 2012-03-26 2022-12-21 Maui Imaging, Inc. Methods for improving ultrasound image quality by applying weighting factors
US20130261981A1 (en) * 2012-04-03 2013-10-03 Westerngeco L.L.C. Covariance estimation using sparse wavelet representation
US9261615B2 (en) * 2012-06-15 2016-02-16 Exxonmobil Upstream Research Company Seismic anomaly detection using double-windowed statistical analysis
KR102176193B1 (ko) 2012-08-10 2020-11-09 마우이 이미징, 인코포레이티드 다중 어퍼처 초음파 프로브들의 교정
IN2015DN00764A (no) 2012-09-06 2015-07-03 Maui Imaging Inc
US9303499B2 (en) 2012-10-18 2016-04-05 Elwha Llc Systems and methods for enhancing recovery of hydrocarbon deposits
US9134444B2 (en) * 2012-11-27 2015-09-15 Chevron U.S.A., Inc. System and method for deducing cavern properties
US9213117B2 (en) 2013-01-02 2015-12-15 Schlumberger Technology Corporation Dip seismic attributes
US9829591B1 (en) 2013-01-07 2017-11-28 IHS Global, Inc. Determining seismic stratigraphic features using a symmetry attribute
US9510806B2 (en) 2013-03-13 2016-12-06 Maui Imaging, Inc. Alignment of ultrasound transducer arrays and multiple aperture probe assembly
CN103217719B (zh) * 2013-04-11 2015-07-15 中国矿业大学 基于单一炮检对观测***的煤巷超前探测断失翼煤层的方法
US9883848B2 (en) 2013-09-13 2018-02-06 Maui Imaging, Inc. Ultrasound imaging using apparent point-source transmit transducer
EP3182900B1 (en) 2014-08-18 2019-09-25 Maui Imaging, Inc. Network-based ultrasound imaging system
CN104360386B (zh) * 2014-12-04 2016-09-21 中国海洋石油总公司 一种针对花岗岩地层划分对比的面元法
CN104459801B (zh) * 2014-12-10 2017-04-12 中国石油天然气集团公司 用于识别断层的相干增强处理方法
CN105093298B (zh) * 2015-07-10 2017-06-13 北京派特森科技股份有限公司 一种微地震数据四维搜索逆时叠加的快速计算方法
RU2603828C1 (ru) * 2015-08-21 2016-11-27 Федеральное государственное бюджетное учреждение "Всероссийский научно-исследовательский геологический нефтяной институт" (ФГБУ "ВНИГНИ") Способ региональной сейсморазведки слабо изученных осадочных бассейнов для выявления и локализации нефтегазовых зон и объектов
WO2017132517A1 (en) 2016-01-27 2017-08-03 Maui Imaging, Inc. Ultrasound imaging with sparse array probes
CN106094051B (zh) * 2016-06-08 2017-12-15 中国海洋石油总公司 一种花岗岩地层划分对比方法
JP6722521B2 (ja) * 2016-06-23 2020-07-15 古野電気株式会社 水中探知システム
US10782433B2 (en) * 2016-07-29 2020-09-22 Baker Hughes Holdings Llc Method for an automatic detection of acoustic reflectors and their parameters from borehole acoustic array data
US10634805B2 (en) * 2017-05-26 2020-04-28 Chevron U.S.A. Inc. System and method for predicting fault seal from seismic data
US11041976B2 (en) 2017-05-30 2021-06-22 Exxonmobil Upstream Research Company Method and system for creating and using a subsurface model in hydrocarbon operations
RU2664503C1 (ru) * 2017-12-20 2018-08-17 Дмитрий Юрьевич Степанов Способ формирования куба или разреза площадок, способ автоматического прослеживания горизонтов/годографов и способ автоматического выявления зон тектонических деформаций и зон трещиноватости
US11609355B2 (en) 2018-10-02 2023-03-21 Chevron U.S.A. Inc. System and method for generating an earth model
US11282269B2 (en) 2020-05-13 2022-03-22 Chevron U.S.A. Inc. Image-comparison based analysis of subsurface representations
CN113740908B (zh) * 2020-05-29 2024-05-07 中国石油化工股份有限公司 地震切片的二维变差分析方法、电子设备及介质
CN114063154B (zh) * 2020-07-29 2024-05-07 中国石油化工股份有限公司 走滑断层位移量计算方法、装置、电子设备及介质
CN112433248B (zh) * 2020-11-10 2022-09-30 成都理工大学 一种碳酸盐岩沉积环境下隐蔽储层的探测方法
US11906679B2 (en) * 2021-09-13 2024-02-20 Saudi Arabian Oil Company Systems and methods for detecting seismic discontinuities by coherence estimation

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981443A (en) * 1975-09-10 1976-09-21 Northrop Corporation Class of transform digital processors for compression of multidimensional data
US4467461A (en) * 1981-01-05 1984-08-21 Conoco Inc. Interactive color analysis of geophysical data
US4633400A (en) * 1984-12-21 1986-12-30 Conoco Inc. Method for waveform feature extraction from seismic signals
USH374H (en) * 1987-02-09 1987-11-03 The United States Of America As Represented By The Secretary Of The Army Optimum multiple target detection and resolution
US4894795A (en) * 1987-04-28 1990-01-16 The United States Of America As Represented By The Secretary Of The Navy High-resolution technique for time-frequency signal analysis using modified wigner-ville analysis
US4937747A (en) * 1988-02-16 1990-06-26 Amoco Corporation Iterative disjoint cluster and discriminant function processing of formation log responses and other data
US4858199A (en) * 1988-09-06 1989-08-15 Mobile Oil Corporation Method and apparatus for cancelling nonstationary sinusoidal noise from seismic data
US4910716A (en) * 1989-01-31 1990-03-20 Amoco Corporation Suppression of coherent noise in seismic data
US4951266A (en) * 1989-04-28 1990-08-21 Schlumberger Technology Corporation Method of filtering sonic well logging data
US5031155A (en) * 1989-04-28 1991-07-09 Schlumberger Technology Corporation Compression and reconstruction of sonic data
US5047991A (en) * 1989-04-28 1991-09-10 Schlumberger Technology Corporation Lithology identification using sonic data
GB9011836D0 (en) * 1990-05-25 1990-07-18 Mason Iain M Seismic surveying
US5056066A (en) * 1990-06-25 1991-10-08 Landmark Graphics Corporation Method for attribute tracking in seismic data
US5175710A (en) * 1990-12-14 1992-12-29 Hutson William H Multi-dimensional data processing and display
US5245587A (en) * 1990-12-14 1993-09-14 Hutson William H Multi-dimensional signal processing and display
US5253192A (en) * 1991-11-14 1993-10-12 The Board Of Governors For Higher Education, State Of Rhode Island And Providence Plantations Signal processing apparatus and method for iteratively determining Arithmetic Fourier Transform
US5563949A (en) * 1994-12-12 1996-10-08 Amoco Corporation Method of seismic signal processing and exploration

Also Published As

Publication number Publication date
CN1189218A (zh) 1998-07-29
AR006341A1 (es) 1999-08-25
CN1186647C (zh) 2005-01-26
NO975784D0 (no) 1997-12-09
EP0832442B1 (en) 2005-03-16
CA2220274C (en) 2005-06-28
AU710968B2 (en) 1999-09-30
EP0832442A1 (en) 1998-04-01
NO319052B1 (no) 2005-06-13
RU2169931C2 (ru) 2001-06-27
AU1824797A (en) 1997-11-07
WO1997039367A1 (en) 1997-10-23
CA2220274A1 (en) 1997-10-23
MX9710022A (es) 1998-07-31
US5892732A (en) 1999-04-06

Similar Documents

Publication Publication Date Title
NO975784L (no) Anordning og fremgangsmåte ved seismisk signalprosessering og undersökelse
NO962731D0 (no) Fremgangsmåte ved seismisk signalprosessering og undersökelse
NO973794D0 (no) Innretning og fremgangsmåte for testing
NO971801D0 (no) Fremgangsmåte og anordning for behandling og undersökelse av seismiske signaler
EG21112A (en) Time-frequency processing and analysis of seismic data using very short-time fourier transforms
NO990274L (no) Fremgangsmåte for akvisisjon og prosessering av seismiske data
FI990961A (fi) Menetelmä ja laite äänimerkkien poimimiseksi liikkuviin päätteisiin
NO308430B1 (no) Anordning og fremgangsmÕte ved signalgenerering
NO963175D0 (no) Analyse- og målemetode
DK0881477T3 (da) Vibrationsbölgedetekteringsfremgangsmåde og vibrationsbölgedetektor
GB2348956B (en) Seismic signal processing method and apparatus
NO940356D0 (no) Fremgangsmaate og anordning for paavisning av seismiske signaler
NO303951B1 (no) FremgangsmÕte og anordning for innsamling av seismiske signaler
DE69734417D1 (de) Bildsignalprozessor und Verarbeitungsverfahren
NO990043D0 (no) Seismisk deteksjonsapparat og fremgangsmÕte
NO308638B1 (no) FremgangsmÕte og anordning for digitalisert signaloverføring
NO974339D0 (no) Fremgangsmåte og apparat for behandling av seismiske datapar
FI103930B1 (fi) Äänisignaalin käsittelylaite ja -menetelmä
NO963461D0 (no) Signalmottakende og signalbehandlende enhet
NO176740C (no) Fremgangsmåte og anordning for prosessering av et analogt signal
KR950702307A (ko) 라만 분석 장치 및 방법(raman analysis apparatus and methods)
NO308335B1 (no) Anordning og fremgangsmÕte for talesignal-deteksjon
NO940713D0 (no) Framgangsmåte og anordning for mekanisk foredling av cellulose
NO954536D0 (no) Fremgangsmåte og anordning for prövetaking
NO303890B1 (no) Fremgangsmåte og system for signalbehandling

Legal Events

Date Code Title Description
MK1K Patent expired