BE731938A - - Google Patents
Info
- Publication number
- BE731938A BE731938A BE731938DA BE731938A BE 731938 A BE731938 A BE 731938A BE 731938D A BE731938D A BE 731938DA BE 731938 A BE731938 A BE 731938A
- 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 elements; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/56—Monolithic crystal filters
- H03H9/566—Electric coupling means therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- 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 |
|---|---|---|---|
| US72367768A | 1968-04-24 | 1968-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE731938A true BE731938A (enrdf_load_stackoverflow) | 1969-10-01 |
Family
ID=24907224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE731938D BE731938A (enrdf_load_stackoverflow) | 1968-04-24 | 1969-04-23 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3599124A (enrdf_load_stackoverflow) |
| BE (1) | BE731938A (enrdf_load_stackoverflow) |
| CH (1) | CH493166A (enrdf_load_stackoverflow) |
| ES (1) | ES366488A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2006841A1 (enrdf_load_stackoverflow) |
| GB (1) | GB1266565A (enrdf_load_stackoverflow) |
| NL (1) | NL6906268A (enrdf_load_stackoverflow) |
| SE (1) | SE362759B (enrdf_load_stackoverflow) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4329666A (en) * | 1980-08-11 | 1982-05-11 | Motorola, Inc. | Two-pole monolithic crystal filter |
| US4825467A (en) * | 1986-11-25 | 1989-04-25 | International Telesystems, Inc. | Restricted access television transmission system |
| US4980598A (en) * | 1989-12-21 | 1990-12-25 | Lucas Schaevitz Inc. | Monolithic resonator for a vibrating beam accelerometer |
| JP2741087B2 (ja) * | 1990-01-12 | 1998-04-15 | 日本特殊陶業株式会社 | ストリップラインフィルタの周波数調整法 |
| US6205315B1 (en) * | 1999-11-24 | 2001-03-20 | Xerox Corporation | Tuned transducer, and methods and systems for tuning a transducer |
| WO2003055063A1 (en) * | 2001-12-06 | 2003-07-03 | University Of Pittsburgh | Tunable piezoelectric micro-mechanical resonator |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3344368A (en) * | 1967-09-26 | Fettweis bandpass filter | ||
| US3396327A (en) * | 1961-12-27 | 1968-08-06 | Toyotsushinki Kabushiki Kaisha | Thickness shear vibration type, crystal electromechanical filter |
| US3222622A (en) * | 1962-08-14 | 1965-12-07 | Clevite Corp | Wave filter comprising piezoelectric wafer electroded to define a plurality of resonant regions independently operable without significant electro-mechanical interaction |
| US3437848A (en) * | 1964-09-24 | 1969-04-08 | Telefunken Patent | Piezoelectric plate filter |
| US3363119A (en) * | 1965-04-19 | 1968-01-09 | Clevite Corp | Piezoelectric resonator and method of making same |
| US3401283A (en) * | 1965-04-19 | 1968-09-10 | Clevite Corp | Piezoelectric resonator |
| US3334307A (en) * | 1966-11-14 | 1967-08-01 | Zenith Radio Corp | Multi-electrode acoustic amplifier with unitary transducing and translating medium |
| US3384768A (en) * | 1967-09-29 | 1968-05-21 | Clevite Corp | Piezoelectric resonator |
-
1968
- 1968-04-24 US US723677A patent/US3599124A/en not_active Expired - Lifetime
-
1969
- 1969-04-16 SE SE05358/69A patent/SE362759B/xx unknown
- 1969-04-18 ES ES366488A patent/ES366488A1/es not_active Expired
- 1969-04-23 NL NL6906268A patent/NL6906268A/xx unknown
- 1969-04-23 CH CH615569A patent/CH493166A/de not_active IP Right Cessation
- 1969-04-23 BE BE731938D patent/BE731938A/xx not_active IP Right Cessation
- 1969-04-23 FR FR6912882A patent/FR2006841A1/fr not_active Withdrawn
- 1969-04-23 GB GB1266565D patent/GB1266565A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1266565A (enrdf_load_stackoverflow) | 1972-03-15 |
| CH493166A (de) | 1970-06-30 |
| NL6906268A (enrdf_load_stackoverflow) | 1969-10-28 |
| DE1919024B2 (de) | 1973-02-01 |
| US3599124A (en) | 1971-08-10 |
| FR2006841A1 (enrdf_load_stackoverflow) | 1970-01-02 |
| ES366488A1 (es) | 1971-03-16 |
| SE362759B (enrdf_load_stackoverflow) | 1973-12-17 |
| DE1919024A1 (de) | 1969-12-04 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: WESTERN ELECTRIC CY INC. Effective date: 19850423 |