US2993165A
(en)
*
|
|
1961-07-18 |
|
Jauch |
US1716700A
(en)
*
|
|
1929-06-11 |
|
Electroscope |
US1446748A
(en)
*
|
|
1923-02-27 |
|
Erederik alfred johnsen and knud rahbek |
US3126510A
(en)
*
|
|
1964-03-24 |
|
Method and means for geophysical prospecting utilizing |
US3253207A
(en)
*
|
|
1966-05-24 |
|
Measuring apparatus |
US1611716A
(en)
*
|
1921-07-09 |
1926-12-21 |
Western Electric Co |
Measuring electrical quantities
|
US1938136A
(en)
*
|
1929-01-26 |
1933-12-05 |
Crew William Henry |
Vacuum tube electrometer
|
US1974483A
(en)
*
|
1930-02-07 |
1934-09-25 |
Brown Thomas Townsend |
Electrostatic motor
|
US2141590A
(en)
*
|
1937-10-30 |
1938-12-27 |
Geophysical Res Corp |
Resistivity meter
|
US2210795A
(en)
*
|
1939-02-16 |
1940-08-06 |
Stanolind Oil & Gas Co |
Method and apparatus for electrical logging
|
US2206863A
(en)
*
|
1939-04-05 |
1940-07-09 |
Stanolind Oil & Gas Co |
Electrical logging of earth formations
|
US2344672A
(en)
*
|
1940-03-23 |
1944-03-21 |
Blasier Herbert |
Method of measuring earth potentials
|
US2449068A
(en)
*
|
1944-08-28 |
1948-09-14 |
Gunn Ross |
Electric field or potential indicator
|
US2482773A
(en)
*
|
1946-10-23 |
1949-09-27 |
Thomas G Hieronymus |
Detection of emanations from materials and measurement of the volumes thereof
|
US2587156A
(en)
*
|
1948-12-28 |
1952-02-26 |
St Joseph Lead Co |
Electric field strength measurement
|
US2659863A
(en)
*
|
1949-12-19 |
1953-11-17 |
Austin N Stanton |
Potential measuring device
|
US2721975A
(en)
*
|
1952-09-10 |
1955-10-25 |
Western Electric Co |
Grounded capacitance measuring system
|
US2862177A
(en)
*
|
1955-02-28 |
1958-11-25 |
Yale W Titterington |
Apparatus for measuring the charge on buried conductors
|
US2820947A
(en)
*
|
1955-04-29 |
1958-01-21 |
Gunn Ross |
Electric field meter
|
US2931221A
(en)
*
|
1955-06-24 |
1960-04-05 |
Stanley J Rusk |
Altitude and altitude rate of change meter
|
US3136943A
(en)
*
|
1956-04-30 |
1964-06-09 |
New Jersey Zinc Co |
Geophysical prospecting method utilizing the electric field component of the earth's natural transient electromagnetic fields
|
US3022430A
(en)
*
|
1957-07-03 |
1962-02-20 |
Whitehall Rand Inc |
Electrokinetic generator
|
US3018394A
(en)
*
|
1957-07-03 |
1962-01-23 |
Whitehall Rand Inc |
Electrokinetic transducer
|
US2949550A
(en)
*
|
1957-07-03 |
1960-08-16 |
Whitehall Rand Inc |
Electrokinetic apparatus
|
US3187206A
(en)
*
|
1958-05-09 |
1965-06-01 |
Electrokinetics Inc |
Electrokinetic apparatus
|
GB899911A
(en)
*
|
1959-05-21 |
1962-06-27 |
Gurry George William |
Improvements in electrical circuit means for sensing a change in capacity between a probe and earth
|
US3256481A
(en)
*
|
1960-03-21 |
1966-06-14 |
Charles F Pulvari |
Means for sensing electrostatic fields
|
US3189802A
(en)
*
|
1960-11-29 |
1965-06-15 |
William A Zisman |
Vibrating capacitor with a coated reference electrode
|
SU140495A1
(ru)
*
|
1960-12-19 |
1961-11-30 |
М.В. Иванов |
Способ измерени напр женности электрического пол
|
US3121196A
(en)
*
|
1961-02-06 |
1964-02-11 |
Heinz W Kasemir |
Instrument for measuring electrical air-earth current
|
US3196296A
(en)
*
|
1961-06-20 |
1965-07-20 |
Electrokinetics Inc |
Electric generator
|
US3296491A
(en)
*
|
1961-09-19 |
1967-01-03 |
Martin M Decker |
Method and apparatus for producing ions and electrically-charged aerosols
|
US3361957A
(en)
*
|
1962-01-23 |
1968-01-02 |
Donald L. Hings |
Telluric current responsive device having spaced conductors for positioning adjacentthe earth's surface
|
US3292059A
(en)
*
|
1964-07-09 |
1966-12-13 |
Boeing Co |
Force transducer
|
US3344344A
(en)
*
|
1964-10-01 |
1967-09-26 |
Jr Nathaniel B Wales |
Electric charge responsive device
|
US3267860A
(en)
*
|
1964-12-31 |
1966-08-23 |
Martin M Decker |
Electrohydrodynamic fluid pump
|
US3485103A
(en)
*
|
1965-10-22 |
1969-12-23 |
Mobil Oil Corp |
Apparatus for measuring gravity
|
US3518462A
(en)
*
|
1967-08-21 |
1970-06-30 |
Guidance Technology Inc |
Fluid flow control system
|
US3611127A
(en)
*
|
1968-09-16 |
1971-10-05 |
Robert E Vosteen |
Electrostatic potential and field measurement apparatus having a capacitor detector with feedback to drive the capacitor detector to the potential being measured
|
US3579054A
(en)
*
|
1969-06-20 |
1971-05-18 |
David S Moulton |
Gravimeter utilizing mass of ions
|
US3921087A
(en)
*
|
1969-10-14 |
1975-11-18 |
Robert E Vosteen |
Electrostatic field modulator having a tuning fork
|
US3727127A
(en)
*
|
1971-01-25 |
1973-04-10 |
Us Army |
High sensitivity electron beam magnetometer
|
US3774110A
(en)
*
|
1971-11-05 |
1973-11-20 |
Woodhead Inc |
Static electric field detector
|
JPS4911371A
(de)
*
|
1972-05-31 |
1974-01-31 |
|
|
US3772592A
(en)
*
|
1972-06-30 |
1973-11-13 |
W Rhodes |
Apparatus for measuring electrostatic fields
|
US3868074A
(en)
*
|
1972-10-27 |
1975-02-25 |
Univ Johns Hopkins |
Method and apparatus for attitude detection and stabilization of an airborne vehicle using the electrostatic field in the earth{3 s atmosphere
|
US3812419A
(en)
*
|
1973-03-05 |
1974-05-21 |
Us Army |
Electronic field mill
|
US3866114A
(en)
*
|
1973-06-15 |
1975-02-11 |
Nasa |
Electrostatic measurement system
|
US3942101A
(en)
*
|
1973-12-06 |
1976-03-02 |
Sayer Wayne L |
Method for locating and evaluating geothermal sources of energy by sensing electrostatic voltage gradients
|
US3916305A
(en)
*
|
1974-05-20 |
1975-10-28 |
Us Navy |
Atmospheric electrical current detector
|
US4101325A
(en)
*
|
1974-07-19 |
1978-07-18 |
Eastman Kodak Company |
Conduit and method for processing webs with a liquid solution
|
US3967198A
(en)
*
|
1974-09-20 |
1976-06-29 |
Gensler William G |
Method and apparatus for electrically determining plant water status
|
BE837244A
(fr)
*
|
1975-03-06 |
1976-04-16 |
|
Detecteur d'ions
|
JPS5226874A
(en)
*
|
1975-08-25 |
1977-02-28 |
Giichiro Kato |
Rotary type electric field intensity measuring apparatus using a stati onary electrode plate provided with holes
|
US4001798A
(en)
*
|
1975-09-18 |
1977-01-04 |
Rockwell International Corporation |
Self-contained sensor
|
US4147981A
(en)
*
|
1977-02-18 |
1979-04-03 |
Williams Bruce T |
Electrostatic voltmeter probe positioned on the outside of a housing and vibrated by a piezoelectric transducer within the housing
|
US4205267A
(en)
*
|
1977-11-03 |
1980-05-27 |
Williams Bruce T |
High speed electrostatic voltmeter
|
US4507611A
(en)
*
|
1978-02-08 |
1985-03-26 |
Helms Ronald L |
Method for detecting surface and subsurface anomalies of the earth using vertical current measurements
|
CA1145400A
(en)
*
|
1978-02-16 |
1983-04-26 |
Raymond A. Laperle |
Ground-isolated electrostatic field detector
|
US4270090A
(en)
*
|
1978-04-24 |
1981-05-26 |
Williams Bruce T |
D.C. Electrostatic voltage follower having ion-coupled probe
|
US4227147A
(en)
*
|
1978-10-16 |
1980-10-07 |
Bell Telephone Laboratories, Incorporated |
Electromechanical parametric amplifier for measurement of electric fields
|
US4342964A
(en)
*
|
1978-12-04 |
1982-08-03 |
Transidyne General Corp. |
Apparatus for electrochemical measurements
|
US4330749A
(en)
*
|
1978-12-25 |
1982-05-18 |
Ricoh Company, Ltd. |
Electrometer apparatus
|
US4277745A
(en)
*
|
1979-04-12 |
1981-07-07 |
Electric Power Research Institute, Inc. |
Personal electric field exposure monitor
|
US4339721A
(en)
*
|
1979-06-06 |
1982-07-13 |
Ando Electric Co., Ltd. |
Electrostatic voltmeter
|
US4328461A
(en)
*
|
1979-07-02 |
1982-05-04 |
Mcdonnell Douglas Corporation |
Apparatus for and method of measuring a high voltage electric field
|
FR2476849A1
(fr)
*
|
1980-02-22 |
1981-08-28 |
Onera (Off Nat Aerospatiale) |
Appareil pour la mesure d'un champ electrique
|
US4386315A
(en)
*
|
1980-04-22 |
1983-05-31 |
Friedmann, Youn And Associates Inc. |
Electric field detector
|
US4370616A
(en)
*
|
1980-08-15 |
1983-01-25 |
Williams Bruce T |
Low impedance electrostatic detector
|
NL8005149A
(nl)
*
|
1980-09-12 |
1982-04-01 |
Nederlandse Gasunie Nv |
Werkwijze en inrichting voor het bewaken van kathodisch beschermde konstrukties.
|
US4523148A
(en)
*
|
1980-10-20 |
1985-06-11 |
Gearhart Industries, Inc. |
Method and apparatus for determining the spontaneous earth potential log from downhole gradient measurements
|
US4433298A
(en)
*
|
1981-11-12 |
1984-02-21 |
Datapoint Corporation |
Calibrated apparent surface voltage measurement apparatus and method
|
DE3201262A1
(de)
*
|
1982-01-16 |
1983-07-28 |
Metzenauer & Jung Gmbh, 5600 Wuppertal |
Drucksensor
|
US4520318A
(en)
*
|
1983-02-17 |
1985-05-28 |
Marcel Hascal |
Electric field strength indicator
|
US4642559A
(en)
*
|
1983-12-12 |
1987-02-10 |
Texaco, Inc. |
Electrostatic field meter
|
US4686605A
(en)
*
|
1985-01-10 |
1987-08-11 |
Apti, Inc. |
Method and apparatus for altering a region in the earth's atmosphere, ionosphere, and/or magnetosphere
|
US4691264A
(en)
*
|
1985-09-23 |
1987-09-01 |
Schaffhauser Brian E |
Static amplification stun gun
|