FR34575E - - Google Patents
Info
- Publication number
- FR34575E FR34575E FR34575DA FR34575E FR 34575 E FR34575 E FR 34575E FR 34575D A FR34575D A FR 34575DA FR 34575 E FR34575 E FR 34575E
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
- G01C17/02—Magnetic compasses
- G01C17/28—Electromagnetic compasses
- G01C17/30—Earth-inductor compasses
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR34575E true FR34575E (en) | 1929-09-16 |
Family
ID=1362472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR34575D Expired FR34575E (en) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR34575E (en) |
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0
- FR FR34575D patent/FR34575E/fr not_active Expired