IT941792B - Attenuatore regolabile - Google Patents
Attenuatore regolabileInfo
- Publication number
- IT941792B IT941792B IT31704/71A IT3170471A IT941792B IT 941792 B IT941792 B IT 941792B IT 31704/71 A IT31704/71 A IT 31704/71A IT 3170471 A IT3170471 A IT 3170471A IT 941792 B IT941792 B IT 941792B
- Authority
- IT
- Italy
- Prior art keywords
- adjustable attenuator
- attenuator
- adjustable
- Prior art date
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
- H04M1/20—Arrangements for preventing acoustic feed-back
-
- 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
- H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Networks Using Active Elements (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE16092/70A SE337846B (it) | 1970-11-27 | 1970-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT941792B true IT941792B (it) | 1973-03-10 |
Family
ID=20301714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT31704/71A IT941792B (it) | 1970-11-27 | 1971-11-26 | Attenuatore regolabile |
Country Status (5)
| Country | Link |
|---|---|
| ES (1) | ES396938A1 (it) |
| FI (1) | FI54424C (it) |
| IT (1) | IT941792B (it) |
| NO (1) | NO125708B (it) |
| SE (1) | SE337846B (it) |
-
1970
- 1970-11-27 SE SE16092/70A patent/SE337846B/xx unknown
-
1971
- 1971-10-28 FI FI3082/71A patent/FI54424C/fi active
- 1971-11-12 ES ES396938A patent/ES396938A1/es not_active Expired
- 1971-11-26 IT IT31704/71A patent/IT941792B/it active
- 1971-11-26 NO NO4358/71A patent/NO125708B/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE337846B (it) | 1971-08-23 |
| NO125708B (it) | 1972-10-16 |
| FI54424B (fi) | 1978-07-31 |
| ES396938A1 (es) | 1975-03-01 |
| FI54424C (fi) | 1978-11-10 |
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