FR2492E - Microphone pour forts courants - Google Patents
Microphone pour forts courantsInfo
- Publication number
- FR2492E FR2492E FR2492A FR2492DA FR2492E FR 2492 E FR2492 E FR 2492E FR 2492 A FR2492 A FR 2492A FR 2492D A FR2492D A FR 2492DA FR 2492 E FR2492 E FR 2492E
- Authority
- FR
- France
- Prior art keywords
- microphone
- strong currents
- currents
- strong
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R21/00—Variable-resistance transducers
- H04R21/02—Microphones
- H04R21/021—Microphones with granular resistance material
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE143599T |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2492E true FR2492E (fr) | 1904-04-27 |
Family
ID=5669775
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR2492A Expired FR2492E (fr) | Microphone pour forts courants | ||
FR317785A Expired FR317785A (fr) | 1902-01-15 | Un microphone pour forts courants |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR317785A Expired FR317785A (fr) | 1902-01-15 | Un microphone pour forts courants |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE143599C (fr) |
FR (2) | FR317785A (fr) |
-
0
- FR FR2492A patent/FR2492E/fr not_active Expired
- DE DENDAT143599D patent/DE143599C/de active Active
-
1902
- 1902-01-15 FR FR317785A patent/FR317785A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR317785A (fr) | 1902-09-27 |
DE143599C (fr) |
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