BE471380A - - Google Patents
Info
- Publication number
- BE471380A BE471380A BE471380DA BE471380A BE 471380 A BE471380 A BE 471380A BE 471380D A BE471380D A BE 471380DA BE 471380 A BE471380 A BE 471380A
- 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)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US659469A US2450434A (en) | 1946-04-04 | 1946-04-04 | Piezoelectric crystal apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE471380A true BE471380A (fr) |
Family
ID=24645532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE471380D BE471380A (fr) | 1946-04-04 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2450434A (fr) |
| BE (1) | BE471380A (fr) |
| FR (1) | FR940483A (fr) |
| GB (1) | GB632515A (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3199991A (en) * | 1961-12-04 | 1965-08-10 | California Ink Company Inc | Black news ink and process for its manufacture |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2170318A (en) * | 1937-04-27 | 1939-08-22 | Cady Walter Guyton | Piezoelectric crystal device |
-
0
- BE BE471380D patent/BE471380A/xx unknown
-
1946
- 1946-04-04 US US659469A patent/US2450434A/en not_active Expired - Lifetime
-
1947
- 1947-02-12 FR FR940483D patent/FR940483A/fr not_active Expired
- 1947-03-21 GB GB7805/47A patent/GB632515A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR940483A (fr) | 1948-12-14 |
| US2450434A (en) | 1948-10-05 |
| GB632515A (en) | 1949-11-28 |