FR937869A - Piezoelectric crystal systems - Google Patents
Piezoelectric crystal systemsInfo
- Publication number
- FR937869A FR937869A FR937869DA FR937869A FR 937869 A FR937869 A FR 937869A FR 937869D A FR937869D A FR 937869DA FR 937869 A FR937869 A FR 937869A
- Authority
- FR
- France
- Prior art keywords
- piezoelectric crystal
- crystal systems
- systems
- piezoelectric
- crystal
- Prior art date
- 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
- 239000013078 crystal Substances 0.000 title 1
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
- H03H9/02—Details
- H03H9/02007—Details of bulk acoustic wave devices
- H03H9/02015—Characteristics of piezoelectric layers, e.g. cutting angles
-
- 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
- H03H9/02007—Details of bulk acoustic wave devices
- H03H9/02157—Dimensional parameters, e.g. ratio between two dimension parameters, length, width or thickness
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US657885A US2454328A (en) | 1946-03-28 | 1946-03-28 | Piezoelectric crystal apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
FR937869A true FR937869A (en) | 1948-08-30 |
Family
ID=24639055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR937869D Expired FR937869A (en) | 1946-03-28 | 1946-12-18 | Piezoelectric crystal systems |
Country Status (4)
Country | Link |
---|---|
US (1) | US2454328A (en) |
BE (1) | BE469891A (en) |
FR (1) | FR937869A (en) |
GB (1) | GB631346A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE806547C (en) * | 1948-03-02 | 1951-06-14 | Machf Reineveld Nv | Dryer, especially for laundry |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2309467A (en) * | 1941-07-25 | 1943-01-26 | Bell Telephone Labor Inc | Rochelle salt piezoelectric crystal apparatus |
-
0
- BE BE469891D patent/BE469891A/xx unknown
-
1946
- 1946-03-28 US US657885A patent/US2454328A/en not_active Expired - Lifetime
- 1946-12-18 FR FR937869D patent/FR937869A/en not_active Expired
-
1947
- 1947-03-14 GB GB7156/47A patent/GB631346A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2454328A (en) | 1948-11-23 |
GB631346A (en) | 1949-11-01 |
BE469891A (en) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH269634A (en) | Oscillating crystal arrangement. | |
FR929389A (en) | Modulation systems | |
CH268039A (en) | Piezoelectric crystal device. | |
FR941062A (en) | Communication systems | |
FR975784A (en) | Modulation systems | |
FR926571A (en) | Frequency generator systems | |
FR944379A (en) | Improvements to telecommunications systems | |
FR951078A (en) | Direction-finding systems | |
FR58174E (en) | Carrier wave radiotelegraph systems | |
FR911761A (en) | Piezoelectric crystal refinements | |
FR938811A (en) | Oscillator systems | |
FR930077A (en) | Piezoelectric crystals | |
FR937869A (en) | Piezoelectric crystal systems | |
FR951576A (en) | Direction-finding systems | |
FR948592A (en) | Piezoelectric crystal refinements | |
FR56934E (en) | Piezoelectric systems | |
FR939044A (en) | Piezoelectric crystal mounts | |
FR954364A (en) | Long distance transmission systems | |
FR940683A (en) | Telephone systems | |
AT181624B (en) | Piezoelectric crystal element | |
AT180955B (en) | Piezoelectric crystal element | |
DK67231C (en) | Piezoelectric Crystal Element. | |
FR928545A (en) | Modulation systems | |
FR920218A (en) | Piezoelectric crystal refinements | |
FR935839A (en) | Piezoelectric crystal refinements |