NL40514C - - Google Patents
Info
- Publication number
- NL40514C NL40514C NL40514DA NL40514C NL 40514 C NL40514 C NL 40514C NL 40514D A NL40514D A NL 40514DA NL 40514 C NL40514 C NL 40514C
- Authority
- NL
- Netherlands
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
-
- 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)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Circuit For Audible Band Transducer (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA72035D DE669549C (de) | 1933-12-13 | 1933-12-13 | Horchgeraet mit paraboloidisch ausgebildetem Schallsammlungssystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL40514C true NL40514C (enrdf_load_stackoverflow) |
Family
ID=6945445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL40514D NL40514C (enrdf_load_stackoverflow) | 1933-12-13 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE669549C (enrdf_load_stackoverflow) |
| NL (1) | NL40514C (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE977511C (de) * | 1954-12-25 | 1966-11-03 | Telefunken Patent | Richtantenne fuer sehr kurze elektromagnetische Wellen |
| JPS5991708A (ja) * | 1982-11-17 | 1984-05-26 | Mitsubishi Electric Corp | アンテナ装置 |
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0
- NL NL40514D patent/NL40514C/xx active
-
1933
- 1933-12-13 DE DEA72035D patent/DE669549C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE669549C (de) | 1938-12-29 |