DE297947C - - Google Patents
Info
- Publication number
- DE297947C DE297947C DENDAT297947D DE297947DA DE297947C DE 297947 C DE297947 C DE 297947C DE NDAT297947 D DENDAT297947 D DE NDAT297947D DE 297947D A DE297947D A DE 297947DA DE 297947 C DE297947 C DE 297947C
- Authority
- DE
- Germany
- Prior art keywords
- straits
- fairway
- bays
- moving
- resistance
- 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.)
- Active
Links
- 238000001514 detection method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
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
- G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE297947C true DE297947C (pt) |
Family
ID=552199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT297947D Active DE297947C (pt) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE297947C (pt) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5206640A (en) * | 1991-02-01 | 1993-04-27 | Esko Hirvonen | Surveillance system |
-
0
- DE DENDAT297947D patent/DE297947C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5206640A (en) * | 1991-02-01 | 1993-04-27 | Esko Hirvonen | Surveillance system |
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