BE387218A - - Google Patents
Info
- Publication number
- BE387218A BE387218A BE387218DA BE387218A BE 387218 A BE387218 A BE 387218A BE 387218D A BE387218D A BE 387218DA BE 387218 A BE387218 A BE 387218A
- Authority
- BE
- Belgium
- Prior art keywords
- field
- emi
- cells
- sound
- listening
- Prior art date
Links
- 238000010276 construction Methods 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR733182T | 1931-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE387218A true BE387218A (OSRAM) |
Family
ID=9124587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE387218D BE387218A (OSRAM) | 1931-05-11 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE387218A (OSRAM) |
| FR (1) | FR733182A (OSRAM) |
-
0
- BE BE387218D patent/BE387218A/fr unknown
-
1931
- 1931-05-11 FR FR733182D patent/FR733182A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR733182A (fr) | 1932-10-01 |
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