BE387028A - - Google Patents
Info
- Publication number
- BE387028A BE387028A BE387028DA BE387028A BE 387028 A BE387028 A BE 387028A BE 387028D A BE387028D A BE 387028DA BE 387028 A BE387028 A BE 387028A
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB844831A GB374946A (en) | 1931-03-19 | 1931-03-19 | Improvements in or relating to telephone handsets or microtelephones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE387028A true BE387028A (en:Method) |
Family
ID=9852678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE387028D BE387028A (en:Method) | 1931-03-19 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE387028A (en:Method) |
| FR (1) | FR732906A (en:Method) |
| GB (1) | GB374946A (en:Method) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2482148A (en) * | 1945-09-10 | 1949-09-20 | Beckman Carl | Electrodynamic telephone handset |
| GB656723A (en) * | 1948-01-10 | 1951-08-29 | Edward Shipton | Improvements in or relating to telephone instruments |
| US2607857A (en) * | 1949-01-12 | 1952-08-19 | Wheeler Insulated Wire Co Inc | Telephone handset |
| DE957232C (de) * | 1954-01-31 | 1957-01-31 | Standard Elek K Ag | Geteilter Handapparat fuer Fernsprecher |
| FR2477812B1 (fr) * | 1980-03-04 | 1987-11-27 | Landis & Gyr Ag | Combine telephonique a ecouteur et microphone proteges par un capot indevissable |
-
0
- BE BE387028D patent/BE387028A/xx unknown
-
1931
- 1931-03-19 GB GB844831A patent/GB374946A/en not_active Expired
-
1932
- 1932-03-10 FR FR732906D patent/FR732906A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR732906A (fr) | 1932-09-28 |
| GB374946A (en) | 1932-06-20 |