BE622703A - - Google Patents
Info
- Publication number
- BE622703A BE622703A BE622703DA BE622703A BE 622703 A BE622703 A BE 622703A BE 622703D A BE622703D A BE 622703DA BE 622703 A BE622703 A BE 622703A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/48—Coupling means therefor
- H03H9/52—Electric coupling means
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Filters And Equalizers (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES75881A DE1221739B (de) | 1961-09-22 | 1961-09-22 | Elektromechanisches Bandfilter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE622703A true BE622703A (US07321065-20080122-C00020.png) |
Family
ID=7505701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE622703D BE622703A (US07321065-20080122-C00020.png) | 1961-09-22 |
Country Status (6)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE320443B (US07321065-20080122-C00020.png) * | 1964-09-21 | 1970-02-09 | Siemens Ag | |
| US4284966A (en) * | 1979-12-21 | 1981-08-18 | Motorola, Inc. | Wide bandwidth helical resonator filter |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1976481A (en) * | 1931-08-20 | 1934-10-09 | Bell Telephone Labor Inc | Wave analysis |
| US2001387A (en) * | 1931-09-24 | 1935-05-14 | Rca Corp | Filter |
| US2115818A (en) * | 1935-12-18 | 1938-05-03 | Bell Telephone Labor Inc | Wave transmission network |
| US2248776A (en) * | 1938-07-28 | 1941-07-08 | Bell Telephone Labor Inc | Wave filter |
| NL58138C (US07321065-20080122-C00020.png) * | 1939-06-02 | |||
| US2271200A (en) * | 1939-07-19 | 1942-01-27 | Bell Telephone Labor Inc | Wave filter |
| NL85495C (US07321065-20080122-C00020.png) * | 1952-01-18 | |||
| US2770782A (en) * | 1952-08-30 | 1956-11-13 | Rca Corp | Frequency selective coupling system |
| US2774042A (en) * | 1953-04-29 | 1956-12-11 | Bell Telephone Labor Inc | Electromechanical wave filter |
-
0
- NL NL283485D patent/NL283485A/xx unknown
- BE BE622703D patent/BE622703A/xx unknown
-
1961
- 1961-09-22 DE DES75881A patent/DE1221739B/de active Pending
-
1962
- 1962-08-30 CH CH1032862A patent/CH395365A/de unknown
- 1962-09-19 GB GB35754/62A patent/GB990298A/en not_active Expired
- 1962-09-21 US US225970A patent/US3284728A/en not_active Expired - Lifetime
- 1962-09-21 NL NL62283485A patent/NL143761B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1221739B (de) | 1966-07-28 |
| NL283485A (US07321065-20080122-C00020.png) | |
| GB990298A (en) | 1965-04-28 |
| CH395365A (de) | 1965-07-15 |
| US3284728A (en) | 1966-11-08 |
| NL143761B (nl) | 1974-10-15 |
