NL81276C - - Google Patents
Info
- Publication number
- NL81276C NL81276C NL81276DA NL81276C NL 81276 C NL81276 C NL 81276C NL 81276D A NL81276D A NL 81276DA NL 81276 C NL81276 C NL 81276C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
-
- 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)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1952K0015213 DE936877C (en) | 1952-08-18 | 1952-08-18 | Capsule microphone |
| DEK16623A DE938132C (en) | 1952-08-18 | 1952-12-27 | Capsule microphone with a plastic housing |
| DEK17036A DE938133C (en) | 1952-08-18 | 1953-02-11 | Capsule microphone with a plastic housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL81276C true NL81276C (en) |
Family
ID=27211128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL81276D NL81276C (en) | 1952-08-18 |
Country Status (3)
| Country | Link |
|---|---|
| DE (3) | DE936877C (en) |
| FR (1) | FR1084409A (en) |
| NL (1) | NL81276C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1040603B (en) * | 1957-06-18 | 1958-10-09 | Krone Kg | Light speech capsule for interrogation sets or the like. |
-
0
- NL NL81276D patent/NL81276C/xx active
-
1952
- 1952-08-18 DE DE1952K0015213 patent/DE936877C/en not_active Expired
- 1952-12-27 DE DEK16623A patent/DE938132C/en not_active Expired
-
1953
- 1953-02-11 DE DEK17036A patent/DE938133C/en not_active Expired
- 1953-07-24 FR FR1084409D patent/FR1084409A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE938133C (en) | 1956-01-26 |
| DE938132C (en) | 1956-01-26 |
| DE936877C (en) | 1955-12-22 |
| FR1084409A (en) | 1955-01-19 |