FR2119482A5 - - Google Patents
Info
- Publication number
- FR2119482A5 FR2119482A5 FR7145722A FR7145722A FR2119482A5 FR 2119482 A5 FR2119482 A5 FR 2119482A5 FR 7145722 A FR7145722 A FR 7145722A FR 7145722 A FR7145722 A FR 7145722A FR 2119482 A5 FR2119482 A5 FR 2119482A5
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/545—Filters comprising resonators of piezoelectric or electrostrictive material including active elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
- G04C3/12—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by piezoelectric means; driven by magneto-strictive means
-
- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
- G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
- G04D3/0035—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the regulating mechanism
-
- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
- G04D3/0074—Watchmakers' or watch-repairers' machines or tools for working materials for treatment of the material, e.g. surface treatment
- G04D3/0089—Watchmakers' or watch-repairers' machines or tools for working materials for treatment of the material, e.g. surface treatment for components of the regulating mechanism, e.g. coil springs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H57/00—Electrostrictive relays; Piezoelectric relays
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders; Supports
- H03H9/10—Mounting in enclosures
- H03H9/1007—Mounting in enclosures for bulk acoustic wave [BAW] devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
- H03H9/176—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of ceramic material
-
- 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
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/56—Monolithic crystal filters
- H03H9/562—Monolithic crystal filters comprising a ceramic piezoelectric layer
-
- 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
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/58—Multiple crystal filters
- H03H9/581—Multiple crystal filters comprising ceramic piezoelectric layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/01—Manufacture or treatment
- H10N30/08—Shaping or machining of piezoelectric or electrostrictive bodies
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/01—Manufacture or treatment
- H10N30/09—Forming piezoelectric or electrostrictive materials
- H10N30/093—Forming inorganic materials
- H10N30/097—Forming inorganic materials by sintering
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/40—Piezoelectric or electrostrictive devices with electrical input and electrical output, e.g. functioning as transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H57/00—Electrostrictive relays; Piezoelectric relays
- H01H2057/003—Electrostrictive relays; Piezoelectric relays the relay being latched in actuated position by magnet
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/42—Piezoelectric device making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/43—Electric condenser making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4981—Utilizing transitory attached element or associated separate material
- Y10T29/49812—Temporary protective coating, impregnation, or cast layer
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
- Circuit For Audible Band Transducer (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU7001600106A SU355903A1 (ru) | 1970-12-21 | 1970-12-21 | Пьезоэлектрическое реле |
SU1608697A SU440127A1 (ru) | 1971-01-18 | 1971-01-18 | Пьезоэлектрический трансформатор |
SU1611885 | 1971-01-25 | ||
SU7101658506A SU374036A1 (ru) | 1971-05-24 | 1971-05-24 | Пьезоэлектрическое реле |
SU1658786 | 1971-05-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2119482A5 true FR2119482A5 (fr) | 1972-08-04 |
Family
ID=27532811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7145722A Expired FR2119482A5 (fr) | 1970-12-21 | 1971-12-20 |
Country Status (4)
Country | Link |
---|---|
US (1) | US3781955A (fr) |
DE (1) | DE2162987A1 (fr) |
FR (1) | FR2119482A5 (fr) |
GB (1) | GB1370674A (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2422866A1 (fr) * | 1978-04-14 | 1979-11-09 | Quantel Sa | Dispositif d'accouplement, notamment pour embrayage ou frein |
EP0251599A2 (fr) * | 1986-06-19 | 1988-01-07 | Gec-Marconi Limited | Transducteur acoustique |
WO1998009339A1 (fr) * | 1996-08-29 | 1998-03-05 | The University Of Birmingham | Elements piezo-electrique et dispositifs comportant ces elements |
EP2590035A1 (fr) | 2011-11-01 | 2013-05-08 | The Swatch Group Research and Development Ltd. | Circuit d'autoregulation de la frequence d'oscillation d'un systeme mecanique oscillant, et dispositif le comprenant |
US9188957B2 (en) | 2011-10-28 | 2015-11-17 | The Swatch Group Research And Development Ltd. | Circuit for autoregulating the oscillation frequency of an oscillating mechanical system and device including the same |
EP4194960A1 (fr) | 2021-12-10 | 2023-06-14 | The Swatch Group Research and Development Ltd | Ressort spiral piézoélectrique, et procédé de fabrication du ressort spiral |
EP4390557A1 (fr) * | 2022-12-23 | 2024-06-26 | The Swatch Group Research and Development Ltd | Resonateur piezoelectrique a spiral, notamment pour moteur rotatif d'horlogerie |
Families Citing this family (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4093883A (en) * | 1975-06-23 | 1978-06-06 | Yujiro Yamamoto | Piezoelectric multimorph switches |
US4056742A (en) * | 1976-04-30 | 1977-11-01 | Tibbetts Industries, Inc. | Transducer having piezoelectric film arranged with alternating curvatures |
US4376302A (en) * | 1978-04-13 | 1983-03-08 | The United States Of America As Represented By The Secretary Of The Navy | Piezoelectric polymer hydrophone |
US4378721A (en) * | 1978-07-20 | 1983-04-05 | Kabushiki Kaisha Kawai Seisakusho | Pickup apparatus for an electric string type instrument |
US4227111A (en) * | 1979-03-28 | 1980-10-07 | The United States Of America As Represented By The Secretary Of The Navy | Flexible piezoelectric composite transducers |
CA1192646A (fr) * | 1980-02-04 | 1985-08-27 | Herzl Laor | Dispositif piezoelectrique positionneur de fibres optiques |
US4339682A (en) * | 1980-09-22 | 1982-07-13 | Rca Corporation | Rotative motor using a piezoelectric element |
US4375042A (en) * | 1980-11-24 | 1983-02-22 | Eastman Kodak Company | Temperature gradient method of nonuniformly poling a body of polymeric piezoelectric material and novel flexure elements produced thereby |
US4395719A (en) * | 1981-01-05 | 1983-07-26 | Exxon Research And Engineering Co. | Ink jet apparatus with a flexible piezoelectric member and method of operating same |
US4399386A (en) * | 1982-02-11 | 1983-08-16 | Rca Corporation | Rotative motor using plural arrays of piezoelectric elements |
US4399385A (en) * | 1982-02-11 | 1983-08-16 | Rca Corporation | Rotative motor using a triangular piezoelectric element |
US4422003A (en) * | 1982-08-16 | 1983-12-20 | The United States Of America As Represented By The Secretary Of The Navy | Perforated PZT polymer composites |
US4514247A (en) * | 1983-08-15 | 1985-04-30 | North American Philips Corporation | Method for fabricating composite transducers |
DE3435569A1 (de) * | 1984-09-27 | 1986-04-10 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur herstellung einer array-ultraschall-antenne |
JP2905643B2 (ja) * | 1992-05-29 | 1999-06-14 | 住友重機械工業株式会社 | 圧電リニアアクチュエータ |
FR2701188B1 (fr) * | 1993-01-29 | 1995-03-03 | Thomson Csf | Procédé de fabrication de composant piézoélectrique. |
US5505364A (en) * | 1993-12-30 | 1996-04-09 | Compaq Computer Corporation | Method of manufacturing ink jet printheads |
US5440194A (en) * | 1994-05-13 | 1995-08-08 | Beurrier; Henry R. | Piezoelectric actuators |
US5559387A (en) * | 1994-05-13 | 1996-09-24 | Beurrier; Henry R. | Piezoelectric actuators |
DK176073B1 (da) * | 1998-03-03 | 2006-04-03 | Limiel Aps | Piezoelektrisk transformer |
JPH11299273A (ja) * | 1998-04-15 | 1999-10-29 | Minolta Co Ltd | 圧電変換素子及び圧電変換素子を使用したアクチエ−タ |
US6307202B1 (en) * | 1998-06-15 | 2001-10-23 | The Board Of Trustees Of The Leland Stanford Junior University | Bimorph spirals for uncooled photothermal spectroscopy |
WO2000021340A1 (fr) * | 1998-10-08 | 2000-04-13 | Richard Patten Bishop | Circuit d'excitation de lampe fluorescente muni d'un transformateur acoustique piezoelectrique multicouches et procedes associes |
US7015624B1 (en) * | 1999-10-22 | 2006-03-21 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Non-uniform thickness electroactive device |
WO2001031172A2 (fr) * | 1999-10-22 | 2001-05-03 | The Government Of The United States As Represented By The Administrator Of The National Aeronautics | Actionneur bi-couche polymere-polymere |
JP2001135873A (ja) * | 1999-11-08 | 2001-05-18 | Minolta Co Ltd | 圧電変換素子 |
GB2376834B (en) * | 1999-12-21 | 2003-06-25 | 1 Ltd | Loudspeaker using an electro-active device |
JP2001230462A (ja) | 2000-02-17 | 2001-08-24 | Minolta Co Ltd | 圧電変換素子 |
DE10025561A1 (de) * | 2000-05-24 | 2001-12-06 | Siemens Ag | Energieautarker Hochfrequenzsender |
CN1162859C (zh) * | 2000-06-08 | 2004-08-18 | 新科实业有限公司 | 采用环形旋转压电执行机构的高密度硬盘驱动器的双级执行机构系统 |
US6671380B2 (en) * | 2001-02-26 | 2003-12-30 | Schlumberger Technology Corporation | Acoustic transducer with spiral-shaped piezoelectric shell |
KR20040014569A (ko) * | 2001-06-21 | 2004-02-14 | 1...리미티드 | 라우드 스피커 |
WO2003005388A2 (fr) | 2001-07-03 | 2003-01-16 | Face Bradbury R | Systeme de declenchement de commutation auto-alimente |
DE10150128C2 (de) * | 2001-10-11 | 2003-10-02 | Enocean Gmbh | Drahtloses Sensorsystem |
JP3832338B2 (ja) * | 2001-12-25 | 2006-10-11 | 松下電工株式会社 | 電歪ポリマーアクチュエータ |
US6713944B2 (en) * | 2002-01-02 | 2004-03-30 | Omron Corporation | Actuator and method of manufacturing a strain element |
US7026891B2 (en) * | 2002-01-08 | 2006-04-11 | Lamina Ceramics, Inc. | Monolithic disc delay line |
AU2003205162A1 (en) * | 2002-01-08 | 2003-07-24 | Lamina Ceramics, Inc. | Monolithic disc delay line and method for making same |
DE102010055417A1 (de) | 2010-12-21 | 2012-06-21 | Hochschule Heilbronn | Elektromechanischer Energiespeicher, insbesondere für integrierte Schaltungen |
US8410665B2 (en) * | 2010-12-23 | 2013-04-02 | Taiwan Semiconductor Manufacturing Company, Ltd. | MEMS kinetic energy conversion |
US9099986B2 (en) * | 2011-09-30 | 2015-08-04 | Qualcomm Mems Technologies, Inc. | Cross-sectional dilation mode resonators |
US9913321B2 (en) * | 2013-01-25 | 2018-03-06 | Energyield, Llc | Energy harvesting container |
JP7073646B2 (ja) * | 2017-07-26 | 2022-05-24 | ヤマハ株式会社 | トランスデューサ |
EP3457223A1 (fr) * | 2017-09-14 | 2019-03-20 | The Swatch Group Research and Development Ltd | Element piezoelectrique pour un circuit d'autoregulation de frequence, et systeme mecanique oscillant et dispositif le comprenant |
EP3457224B1 (fr) * | 2017-09-14 | 2020-10-28 | The Swatch Group Research and Development Ltd | Element piezoelectrique pour un circuit d'autoregulation de frequence, systeme mecanique oscillant et dispositif le comprenant, et procede de fabrication de l'element piezoelectrique |
EP3629103B1 (fr) * | 2018-09-28 | 2021-05-12 | The Swatch Group Research and Development Ltd | Pièce d'horlogerie comprenant un mouvement mécanique dont la marche est régulée par un dispositif électronique |
CN111162749A (zh) * | 2020-01-08 | 2020-05-15 | 武汉大学 | 一种新型谐振器结构 |
CN113464609B (zh) * | 2021-06-03 | 2022-10-28 | 江苏大学 | 一种基于飞轮与弹簧同轴串联的防冲击惯容器 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1219629A (en) * | 1914-02-13 | 1917-03-20 | Detroit Stove Works | Method of forming electrical heat units. |
US3109112A (en) * | 1962-03-13 | 1963-10-29 | Robert A Lester | Double frequency transducer |
US3230504A (en) * | 1962-11-30 | 1966-01-18 | John J Horan | Open hemispherical transducers |
US3519902A (en) * | 1969-04-02 | 1970-07-07 | Itt | Spiral plate capacitor |
US3600787A (en) * | 1969-05-26 | 1971-08-24 | Itt | Method of making capacitors with free-standing electrodes |
-
1971
- 1971-12-15 US US00208306A patent/US3781955A/en not_active Expired - Lifetime
- 1971-12-16 GB GB5855871A patent/GB1370674A/en not_active Expired
- 1971-12-18 DE DE19712162987 patent/DE2162987A1/de active Pending
- 1971-12-20 FR FR7145722A patent/FR2119482A5/fr not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2422866A1 (fr) * | 1978-04-14 | 1979-11-09 | Quantel Sa | Dispositif d'accouplement, notamment pour embrayage ou frein |
EP0251599A2 (fr) * | 1986-06-19 | 1988-01-07 | Gec-Marconi Limited | Transducteur acoustique |
EP0251599A3 (fr) * | 1986-06-19 | 1989-04-26 | Gec-Marconi Limited | Transducteur acoustique |
WO1998009339A1 (fr) * | 1996-08-29 | 1998-03-05 | The University Of Birmingham | Elements piezo-electrique et dispositifs comportant ces elements |
US9188957B2 (en) | 2011-10-28 | 2015-11-17 | The Swatch Group Research And Development Ltd. | Circuit for autoregulating the oscillation frequency of an oscillating mechanical system and device including the same |
EP2590035A1 (fr) | 2011-11-01 | 2013-05-08 | The Swatch Group Research and Development Ltd. | Circuit d'autoregulation de la frequence d'oscillation d'un systeme mecanique oscillant, et dispositif le comprenant |
EP4194960A1 (fr) | 2021-12-10 | 2023-06-14 | The Swatch Group Research and Development Ltd | Ressort spiral piézoélectrique, et procédé de fabrication du ressort spiral |
EP4390557A1 (fr) * | 2022-12-23 | 2024-06-26 | The Swatch Group Research and Development Ltd | Resonateur piezoelectrique a spiral, notamment pour moteur rotatif d'horlogerie |
Also Published As
Publication number | Publication date |
---|---|
US3781955A (en) | 1974-01-01 |
GB1370674A (en) | 1974-10-16 |
DE2162987A1 (de) | 1972-07-20 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |