BE470165A - - Google Patents
Info
- Publication number
- BE470165A BE470165A BE470165DA BE470165A BE 470165 A BE470165 A BE 470165A BE 470165D A BE470165D A BE 470165DA BE 470165 A BE470165 A BE 470165A
- 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
- H03H9/02—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
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Developing Agents For Electrophotography (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US657886A US2458615A (en) | 1946-03-28 | 1946-03-28 | Piezoelectric crystal apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE470165A true BE470165A (US06373033-20020416-M00071.png) |
Family
ID=24639061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE470165D BE470165A (US06373033-20020416-M00071.png) | 1946-03-28 |
Country Status (7)
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2925502A (en) * | 1956-12-21 | 1960-02-16 | Philips Corp | Piezo-electric quartz crystal of elongated shape |
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 BE470165D patent/BE470165A/xx unknown
-
1946
- 1946-03-28 US US657886A patent/US2458615A/en not_active Expired - Lifetime
- 1946-12-19 FR FR938538D patent/FR938538A/fr not_active Expired
-
1947
- 1947-02-03 CH CH263126D patent/CH263126A/fr unknown
- 1947-02-20 ES ES0177115A patent/ES177115A1/es not_active Expired
- 1947-03-14 GB GB7151/47A patent/GB631345A/en not_active Expired
-
1948
- 1948-12-31 DE DEP28897D patent/DE832164C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH263126A (fr) | 1949-08-15 |
| GB631345A (en) | 1949-11-01 |
| FR938538A (fr) | 1948-10-18 |
| DE832164C (de) | 1952-02-21 |
| US2458615A (en) | 1949-01-11 |
| ES177115A1 (es) | 1947-04-16 |
