FR644662A - Appareil de prospection souterraine - Google Patents
Appareil de prospection souterraineInfo
- Publication number
- FR644662A FR644662A FR644662DA FR644662A FR 644662 A FR644662 A FR 644662A FR 644662D A FR644662D A FR 644662DA FR 644662 A FR644662 A FR 644662A
- Authority
- FR
- France
- Prior art keywords
- prospecting device
- underground
- underground prospecting
- prospecting
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
- G01V3/108—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils the emitter and the receiver coils or loops being uncoupled by positioning them perpendicularly to each other
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US155837A US1676779A (en) | 1926-12-20 | 1926-12-20 | Device for underground prospecting |
Publications (1)
Publication Number | Publication Date |
---|---|
FR644662A true FR644662A (fr) | 1928-10-12 |
Family
ID=22556987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR644662D Expired FR644662A (fr) | 1926-12-20 | 1927-11-28 | Appareil de prospection souterraine |
Country Status (2)
Country | Link |
---|---|
US (1) | US1676779A (fr) |
FR (1) | FR644662A (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3521153A (en) * | 1968-07-11 | 1970-07-21 | American Smelting Refining | Geophysical prospecting with electromagnetic waves of extremely low frequency |
US3538431A (en) * | 1968-09-26 | 1970-11-03 | American Smelting Refining | Geophysical prospecting with subsurface propagated electromagnetic waves |
US4053828A (en) * | 1976-05-03 | 1977-10-11 | Xonics, Inc. | Metal detector with first and second nested rectangular coils |
US4070625A (en) * | 1976-09-14 | 1978-01-24 | Dravo Corporation | Apparatus for measuring the distance to the floor of the cargo hold of a ship through intervening bulk material |
US5066917A (en) * | 1990-01-17 | 1991-11-19 | Stolar, Inc. | Long feature vertical or horizontal electrical conductor detection methodology using phase coherent electromagnetic instrumentation |
-
1926
- 1926-12-20 US US155837A patent/US1676779A/en not_active Expired - Lifetime
-
1927
- 1927-11-28 FR FR644662D patent/FR644662A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US1676779A (en) | 1928-07-10 |
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