NL225484A - - Google Patents
Info
- Publication number
- NL225484A NL225484A NL225484DA NL225484A NL 225484 A NL225484 A NL 225484A NL 225484D A NL225484D A NL 225484DA NL 225484 A NL225484 A NL 225484A
- Authority
- NL
- Netherlands
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
- H03H9/48—Coupling means therefor
- H03H9/50—Mechanical coupling means
Landscapes
- 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 |
|---|---|---|---|
| DE1957T0013399 DE1242770B (de) | 1957-03-22 | 1957-03-22 | Mechanisches Frequenzfilter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL225484A true NL225484A (en:Method) |
Family
ID=7547323
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL225484D NL225484A (en:Method) | 1957-03-22 | ||
| NL114040D NL114040C (en:Method) | 1957-03-22 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL114040D NL114040C (en:Method) | 1957-03-22 |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH358873A (en:Method) |
| DE (1) | DE1242770B (en:Method) |
| FR (1) | FR1191702A (en:Method) |
| NL (2) | NL114040C (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1491528B1 (de) * | 1965-04-20 | 1972-04-27 | Elektronische Bauelemente Veb | Mechanischer bandpass |
| DE2124787C2 (de) * | 1971-05-19 | 1984-07-12 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Mechanische Filter |
| FR2360212A1 (fr) * | 1976-07-26 | 1978-02-24 | Lignes Telegraph Telephon | Perfectionnement au couplage pour filtres electromecaniques |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2240306A (en) * | 1939-10-24 | 1941-04-29 | Bell Telephone Labor Inc | Electromechanical filter |
| NL71852C (en:Method) * | 1946-01-07 | |||
| NL170958B (nl) * | 1951-07-02 | Hercules Inc | Werkwijze voor het bereiden van silanen die een of meer aan silicium gebonden hydrolyseerbare groepen en ten minste een via een koolstofketen aan silicium gebonden reactieve groep bevatten, alsmede werkwijze voor het hechten van een polymeer aan een substraat onder toepassing van een zodanig silaanderivaat. | |
| GB703020A (en) * | 1951-07-18 | 1954-01-27 | John Hugh Davey Walton | Improvements in or relating to frequency filters |
-
0
- NL NL225484D patent/NL225484A/xx unknown
- NL NL114040D patent/NL114040C/xx active
-
1957
- 1957-03-22 DE DE1957T0013399 patent/DE1242770B/de active Pending
-
1958
- 1958-02-12 CH CH358873D patent/CH358873A/de unknown
- 1958-02-19 FR FR1191702D patent/FR1191702A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH358873A (de) | 1961-12-15 |
| NL114040C (en:Method) | |
| DE1242770B (de) | 1967-06-22 |
| FR1191702A (fr) | 1959-10-21 |