BG21578A1 - - Google Patents
Info
- Publication number
- BG21578A1 BG21578A1 BG1929271A BG1929271A BG21578A1 BG 21578 A1 BG21578 A1 BG 21578A1 BG 1929271 A BG1929271 A BG 1929271A BG 1929271 A BG1929271 A BG 1929271A BG 21578 A1 BG21578 A1 BG 21578A1
- Authority
- BG
- Bulgaria
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)
- Prostheses (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD15224970 | 1970-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BG21578A1 true BG21578A1 (en) | 1976-07-20 |
Family
ID=5483313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BG1929271A BG21578A1 (en) | 1970-12-24 | 1971-12-21 |
Country Status (4)
| Country | Link |
|---|---|
| BG (1) | BG21578A1 (en) |
| DE (1) | DE2151956A1 (en) |
| HU (1) | HU165370B (en) |
| SU (1) | SU463239A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU575917B2 (en) * | 1984-06-29 | 1988-08-11 | Wang Laboratories, Inc. | Ergonomic telephone handset |
-
1971
- 1971-10-19 DE DE19712151956 patent/DE2151956A1/en active Pending
- 1971-12-21 BG BG1929271A patent/BG21578A1/xx unknown
- 1971-12-23 HU HUII000086 patent/HU165370B/hu unknown
- 1971-12-23 SU SU1727826A patent/SU463239A1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| HU165370B (en) | 1974-08-28 |
| SU463239A1 (en) | 1975-03-05 |
| DE2151956A1 (en) | 1972-07-13 |