BE620888A - - Google Patents
Info
- Publication number
- BE620888A BE620888A BE620888DA BE620888A BE 620888 A BE620888 A BE 620888A BE 620888D A BE620888D A BE 620888DA BE 620888 A BE620888 A BE 620888A
- Authority
- BE
- Belgium
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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR870399A FR1304132A (fr) | 1961-08-07 | 1961-08-07 | Capsule téléphonique autogénératrice perfectionnée |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE620888A true BE620888A (https=) |
Family
ID=8760977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE620888D BE620888A (https=) | 1961-08-07 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE620888A (https=) |
| DE (1) | DE1177685B (https=) |
| FR (1) | FR1304132A (https=) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB603418A (en) * | 1945-10-22 | 1948-06-15 | Siemens Brothers & Co Ltd | Improvements relating to electromagnetic telephone instruments |
-
0
- BE BE620888D patent/BE620888A/xx unknown
-
1961
- 1961-08-07 FR FR870399A patent/FR1304132A/fr not_active Expired
-
1962
- 1962-08-04 DE DES80755A patent/DE1177685B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR1304132A (fr) | 1962-09-21 |
| DE1177685B (de) | 1964-09-10 |