BE622704A - - Google Patents
Info
- Publication number
- BE622704A BE622704A BE622704DA BE622704A BE 622704 A BE622704 A BE 622704A BE 622704D A BE622704D A BE 622704DA BE 622704 A BE622704 A BE 622704A
- 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)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19611616918 DE1616918C2 (de) | 1961-09-22 | Elektromechanisches Bandfilter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE622704A true BE622704A (no) |
Family
ID=5682249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE622704D BE622704A (no) | 1961-09-22 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3287669A (no) |
| BE (1) | BE622704A (no) |
| CH (1) | CH395364A (no) |
| DE (1) | DE1616918B1 (no) |
| FR (1) | FR1341576A (no) |
| GB (1) | GB990299A (no) |
| NL (2) | NL140680B (no) |
| SE (1) | SE309638B (no) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT259027B (de) * | 1964-09-21 | 1967-12-27 | Siemens Ag | Elektromechanisches Bandfilter |
| DE2214252C3 (de) * | 1972-03-23 | 1980-02-14 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Bandfilter fur elektrische Schwingungen |
| US4246554A (en) * | 1978-12-11 | 1981-01-20 | E-Systems, Inc. | Inductorless monolithic crystal filter network |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (no) * | 1939-06-02 | |||
| GB538946A (en) * | 1939-12-13 | 1941-08-22 | Marconi Wireless Telegraph Co | Improvements in electric filter circuits |
| US2345941A (en) * | 1941-12-17 | 1944-04-04 | American Foundry Equip Co | Mechanical filling of porous wood |
| US2443471A (en) * | 1945-03-29 | 1948-06-15 | Bell Telephone Labor Inc | Piezoelectric damping means for mechanical vibrations |
| US2452114A (en) * | 1945-04-26 | 1948-10-26 | Bell Telephone Labor Inc | Balanced wave filter |
| US2774042A (en) * | 1953-04-29 | 1956-12-11 | Bell Telephone Labor Inc | Electromechanical wave filter |
| US2814785A (en) * | 1955-07-29 | 1957-11-26 | Rca Corp | Electromechanical filter |
| US3015789A (en) * | 1956-04-23 | 1962-01-02 | Toyotsushinki Kabushiki Kaisha | Mechanical filter |
| US3064213A (en) * | 1959-08-14 | 1962-11-13 | Bell Telephone Labor Inc | Electromechanical wave transmission systems |
-
0
- NL NL283486D patent/NL283486A/xx unknown
- BE BE622704D patent/BE622704A/xx unknown
-
1961
- 1961-09-22 DE DE1961S0075882 patent/DE1616918B1/de active Pending
-
1962
- 1962-08-30 CH CH1032662A patent/CH395364A/de unknown
- 1962-09-07 FR FR908897A patent/FR1341576A/fr not_active Expired
- 1962-09-20 GB GB35789/62A patent/GB990299A/en not_active Expired
- 1962-09-21 US US225967A patent/US3287669A/en not_active Expired - Lifetime
- 1962-09-21 SE SE10202/62A patent/SE309638B/xx unknown
- 1962-09-21 NL NL62283486A patent/NL140680B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB990299A (en) | 1965-04-28 |
| CH395364A (de) | 1965-07-15 |
| NL283486A (no) | |
| US3287669A (en) | 1966-11-22 |
| FR1341576A (fr) | 1963-11-02 |
| NL140680B (nl) | 1973-12-17 |
| DE1616918B1 (de) | 1969-10-02 |
| SE309638B (no) | 1969-03-31 |