NL18672C - - Google Patents
Info
- Publication number
- NL18672C NL18672C NL18672DA NL18672C NL 18672 C NL18672 C NL 18672C NL 18672D A NL18672D A NL 18672DA NL 18672 C NL18672 C NL 18672C
- Authority
- NL
- Netherlands
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)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES70001D DE436163C (de) | 1925-05-15 | 1925-05-15 | Vorrichtung zur Richtungsbestimmung von Schallquellen mittels zweier akustisch-elektrischer Empfangsgeraete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL18672C true NL18672C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=7501385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL18672D NL18672C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1925-05-15 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE436163C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
| NL (1) | NL18672C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE843512C (de) * | 1948-12-19 | 1952-07-10 | Fro Dr Trommsdorff | Verfahren zur Ortung von Geraeuschquellen, insbesondere im Erdboden |
-
0
- NL NL18672D patent/NL18672C/xx active
-
1925
- 1925-05-15 DE DES70001D patent/DE436163C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE436163C (de) | 1926-10-25 |