SU500599A1 - Экспоненциальный звукопровод - Google Patents
Экспоненциальный звукопроводInfo
- Publication number
- SU500599A1 SU500599A1 SU1690176A SU1690176A SU500599A1 SU 500599 A1 SU500599 A1 SU 500599A1 SU 1690176 A SU1690176 A SU 1690176A SU 1690176 A SU1690176 A SU 1690176A SU 500599 A1 SU500599 A1 SU 500599A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- duct
- telephone
- sound
- wall
- conduit
- Prior art date
Links
- 239000004020 conductor Substances 0.000 claims 2
- 239000002775 capsule Substances 0.000 claims 1
- 239000002991 molded plastic Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD14972270 | 1970-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU500599A1 true SU500599A1 (ru) | 1976-01-25 |
Family
ID=5482879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1690176A SU500599A1 (ru) | 1970-08-26 | 1971-08-13 | Экспоненциальный звукопровод |
Country Status (6)
| Country | Link |
|---|---|
| BG (1) | BG20058A1 (enrdf_load_stackoverflow) |
| CS (1) | CS177913B1 (enrdf_load_stackoverflow) |
| DE (1) | DE2135804A1 (enrdf_load_stackoverflow) |
| HU (1) | HU163415B (enrdf_load_stackoverflow) |
| SU (1) | SU500599A1 (enrdf_load_stackoverflow) |
| YU (1) | YU216271A (enrdf_load_stackoverflow) |
-
1971
- 1971-07-17 DE DE19712135804 patent/DE2135804A1/de active Pending
- 1971-08-09 CS CS575371A patent/CS177913B1/cs unknown
- 1971-08-13 SU SU1690176A patent/SU500599A1/ru active
- 1971-08-13 BG BG1833971A patent/BG20058A1/xx unknown
- 1971-08-23 HU HUII000073 patent/HU163415B/hu unknown
- 1971-08-24 YU YU216271A patent/YU216271A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BG20058A1 (enrdf_load_stackoverflow) | 1975-10-30 |
| YU216271A (en) | 1978-05-15 |
| HU163415B (enrdf_load_stackoverflow) | 1973-08-28 |
| CS177913B1 (enrdf_load_stackoverflow) | 1977-08-31 |
| DE2135804A1 (de) | 1972-03-02 |
| YU34074B (enrdf_load_stackoverflow) | 1978-10-31 |
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