PL77117B1 - - Google Patents
Info
- Publication number
- PL77117B1 PL77117B1 PL14160470A PL14160470A PL77117B1 PL 77117 B1 PL77117 B1 PL 77117B1 PL 14160470 A PL14160470 A PL 14160470A PL 14160470 A PL14160470 A PL 14160470A PL 77117 B1 PL77117 B1 PL 77117B1
- Authority
- PL
- Poland
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
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
-
- 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
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Carbon And Carbon Compounds (AREA)
- Conductive Materials (AREA)
- Chemical Vapour Deposition (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL14160470A PL77117B1 (cs) | 1970-06-26 | 1970-06-26 | |
| DE19712128471 DE2128471A1 (de) | 1970-06-26 | 1971-06-08 | Verfahren zur Herstellung von Elektroden, insbesondere für Kohlemikrophonkapseln |
| CS448471A CS159281B2 (cs) | 1970-06-26 | 1971-06-17 | |
| FR7122438A FR2096503A3 (en) | 1970-06-26 | 1971-06-21 | Electrodes for microphones - by deposition of crystalline carbon on thermal decomp of heptane |
| HUZA000334 HU163814B (cs) | 1970-06-26 | 1971-06-24 | |
| SU1884118A SU467535A3 (ru) | 1970-06-26 | 1973-02-13 | Угольный микрофонный капсюль с электродами |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL14160470A PL77117B1 (cs) | 1970-06-26 | 1970-06-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL77117B1 true PL77117B1 (cs) | 1975-02-28 |
Family
ID=19951936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL14160470A PL77117B1 (cs) | 1970-06-26 | 1970-06-26 |
Country Status (6)
| Country | Link |
|---|---|
| CS (1) | CS159281B2 (cs) |
| DE (1) | DE2128471A1 (cs) |
| FR (1) | FR2096503A3 (cs) |
| HU (1) | HU163814B (cs) |
| PL (1) | PL77117B1 (cs) |
| SU (1) | SU467535A3 (cs) |
-
1970
- 1970-06-26 PL PL14160470A patent/PL77117B1/xx unknown
-
1971
- 1971-06-08 DE DE19712128471 patent/DE2128471A1/de active Pending
- 1971-06-17 CS CS448471A patent/CS159281B2/cs unknown
- 1971-06-21 FR FR7122438A patent/FR2096503A3/fr active Granted
- 1971-06-24 HU HUZA000334 patent/HU163814B/hu unknown
-
1973
- 1973-02-13 SU SU1884118A patent/SU467535A3/ru active
Also Published As
| Publication number | Publication date |
|---|---|
| CS159281B2 (cs) | 1974-12-27 |
| SU467535A3 (ru) | 1975-04-15 |
| DE2128471A1 (de) | 1971-12-30 |
| FR2096503B3 (cs) | 1974-04-05 |
| FR2096503A3 (en) | 1972-02-18 |
| HU163814B (cs) | 1973-10-27 |