BE873618A - Filtre electromecanique - Google Patents
Filtre electromecaniqueInfo
- Publication number
- BE873618A BE873618A BE1/9247A BE1009247A BE873618A BE 873618 A BE873618 A BE 873618A BE 1/9247 A BE1/9247 A BE 1/9247A BE 1009247 A BE1009247 A BE 1009247A BE 873618 A BE873618 A BE 873618A
- Authority
- BE
- Belgium
- Prior art keywords
- electromechanical filter
- electromechanical
- filter
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/46—Filters
- H03H9/48—Coupling means therefor
- H03H9/50—Mechanical coupling means
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7803792A FR2417215A1 (fr) | 1978-02-10 | 1978-02-10 | Filtre electromecanique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE873618A true BE873618A (fr) | 1979-07-23 |
Family
ID=9204451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE1/9247A BE873618A (fr) | 1978-02-10 | 1979-01-22 | Filtre electromecanique |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4213107A (fr) |
| JP (1) | JPS54116863A (fr) |
| BE (1) | BE873618A (fr) |
| CA (1) | CA1118852A (fr) |
| DE (1) | DE2904238A1 (fr) |
| FR (1) | FR2417215A1 (fr) |
| GB (1) | GB2014392B (fr) |
| IE (1) | IE790249L (fr) |
| IT (1) | IT1118330B (fr) |
| LU (1) | LU80892A1 (fr) |
| NL (1) | NL7900972A (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030052749A1 (en) * | 2001-09-04 | 2003-03-20 | In Kui Cho | Resonator, method for manufacturing filter by using resonator and filter manufactured by the same method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE788576A (fr) * | 1971-09-10 | 1973-01-02 | Siemens Ag | Filtre electromecanique |
| FR2304217A1 (fr) * | 1975-03-13 | 1976-10-08 | Cit Alcatel | Filtre mecanique |
| FR2350732A1 (fr) * | 1976-05-05 | 1977-12-02 | Telecommunications Sa | Perfectionnements aux filtres electromecaniques passe-bande |
-
1978
- 1978-02-10 FR FR7803792A patent/FR2417215A1/fr active Granted
- 1978-02-10 IE IE790249A patent/IE790249L/xx unknown
-
1979
- 1979-01-22 BE BE1/9247A patent/BE873618A/fr not_active IP Right Cessation
- 1979-01-22 GB GB7902293A patent/GB2014392B/en not_active Expired
- 1979-01-31 US US06/008,198 patent/US4213107A/en not_active Expired - Lifetime
- 1979-02-05 IT IT67246/79A patent/IT1118330B/it active
- 1979-02-05 DE DE19792904238 patent/DE2904238A1/de not_active Withdrawn
- 1979-02-07 CA CA000321061A patent/CA1118852A/fr not_active Expired
- 1979-02-07 NL NL7900972A patent/NL7900972A/xx not_active Application Discontinuation
- 1979-02-08 LU LU80892A patent/LU80892A1/fr unknown
- 1979-02-09 JP JP1346679A patent/JPS54116863A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| IT1118330B (it) | 1986-02-24 |
| GB2014392A (en) | 1979-08-22 |
| IT7967246A0 (it) | 1979-02-05 |
| US4213107A (en) | 1980-07-15 |
| JPS54116863A (en) | 1979-09-11 |
| CA1118852A (fr) | 1982-02-23 |
| FR2417215B1 (fr) | 1980-08-22 |
| GB2014392B (en) | 1982-03-24 |
| NL7900972A (nl) | 1979-08-14 |
| DE2904238A1 (de) | 1979-08-16 |
| LU80892A1 (fr) | 1979-10-29 |
| IE790249L (en) | 1980-08-09 |
| FR2417215A1 (fr) | 1979-09-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: CIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCAT Effective date: 19840122 |