DE211730C - - Google Patents
Info
- Publication number
- DE211730C DE211730C DENDAT211730D DE211730DA DE211730C DE 211730 C DE211730 C DE 211730C DE NDAT211730 D DENDAT211730 D DE NDAT211730D DE 211730D A DE211730D A DE 211730DA DE 211730 C DE211730 C DE 211730C
- Authority
- DE
- Germany
- Prior art keywords
- rod
- vibrations
- rubbed
- membrane
- itself
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Soil Working Implements (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE211730C true DE211730C (cs) |
Family
ID=473510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT211730D Active DE211730C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE211730C (cs) |
-
0
- DE DENDAT211730D patent/DE211730C/de active Active
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