NL221977A - - Google Patents
Info
- Publication number
- NL221977A NL221977A NL221977DA NL221977A NL 221977 A NL221977 A NL 221977A NL 221977D A NL221977D A NL 221977DA NL 221977 A NL221977 A NL 221977A
- 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)
- Control Of Motors That Do Not Use Commutators (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE892922T | 1957-12-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL221977A true NL221977A (en:Method) |
Family
ID=32332149
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL114041D NL114041C (en:Method) | 1957-12-12 | ||
| NL113914D NL113914C (en:Method) | 1957-12-12 | ||
| NL233996D NL233996A (en:Method) | 1957-12-12 | ||
| NL221977D NL221977A (en:Method) | 1957-12-12 |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL114041D NL114041C (en:Method) | 1957-12-12 | ||
| NL113914D NL113914C (en:Method) | 1957-12-12 | ||
| NL233996D NL233996A (en:Method) | 1957-12-12 |
Country Status (7)
| Country | Link |
|---|---|
| US (2) | US3086182A (en:Method) |
| CH (2) | CH353096A (en:Method) |
| FR (1) | FR1184459A (en:Method) |
| GB (2) | GB842756A (en:Method) |
| IT (1) | IT616267A (en:Method) |
| NL (4) | NL221977A (en:Method) |
| SE (1) | SE178175C1 (en:Method) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1158588B (de) * | 1960-05-14 | 1963-12-05 | Telefunken Patent | Elektrostriktiver Torsionsschwinger |
| BE622705A (en:Method) * | 1961-09-22 | |||
| GB1041375A (en) * | 1962-06-28 | 1966-09-07 | Telefunken Patent | Mechanical frequency filter |
| US3296562A (en) * | 1962-09-21 | 1967-01-03 | Telefunken Patent | Electromechanical filter |
| DE2142332C2 (de) * | 1971-08-24 | 1983-07-14 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Mechanisches Filter und Verfahren zur Herstellung des Filters |
| US3931600A (en) * | 1973-06-11 | 1976-01-06 | Kokusai Electric Co., Ltd. | Mechanical filter |
| JPS54109355A (en) * | 1978-02-15 | 1979-08-27 | Fujitsu Ltd | Mechanical filter |
| DE2903943A1 (de) * | 1979-02-02 | 1980-08-07 | Licentia Gmbh | Verfahren zum durchschalten von kanaelen oder kanalbuendeln zwischen zwei vormodulationssystemen mit unterschiedlicher vorkanallage |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1933306A (en) * | 1931-04-30 | 1933-10-31 | Gen Electric | Electrical frequency analyzer |
| US2552139A (en) * | 1948-06-17 | 1951-05-08 | Philco Corp | Electrical system |
| US2615981A (en) * | 1949-01-14 | 1952-10-28 | Collins Radio Co | Electromechanical filter |
| US2736824A (en) * | 1950-12-21 | 1956-02-28 | Rca Corp | Magnetostrictive ferrites |
| US2762985A (en) * | 1952-09-20 | 1956-09-11 | Rca Corp | Mechanically resonant filter devices |
| US2802992A (en) * | 1953-05-07 | 1957-08-13 | Collins Radio Co | Elimination of spurious response in an electromechanical filter |
| US2799832A (en) * | 1953-09-11 | 1957-07-16 | Motoroln Inc | Electromechanical filter |
| US2810888A (en) * | 1954-08-03 | 1957-10-22 | Rca Corp | Electromechanical filter |
| US2856588A (en) * | 1956-03-01 | 1958-10-14 | Rca Corp | Mechanical filter |
| US2926315A (en) * | 1956-08-27 | 1960-02-23 | Rca Corp | Electromechanical filter |
-
0
- NL NL114041D patent/NL114041C/xx active
- NL NL113914D patent/NL113914C/xx active
- NL NL233996D patent/NL233996A/xx unknown
- IT IT616267D patent/IT616267A/it unknown
- NL NL221977D patent/NL221977A/xx unknown
-
1957
- 1957-10-05 CH CH353096D patent/CH353096A/de unknown
- 1957-10-17 FR FR1184459D patent/FR1184459A/fr not_active Expired
- 1957-10-31 US US693681A patent/US3086182A/en not_active Expired - Lifetime
- 1957-11-01 GB GB34157/57A patent/GB842756A/en not_active Expired
-
1958
- 1958-09-26 CH CH358874D patent/CH358874A/de unknown
- 1958-10-24 SE SE988658A patent/SE178175C1/xx unknown
- 1958-11-26 GB GB38111/58A patent/GB892922A/en not_active Expired
- 1958-12-03 US US777906A patent/US2994047A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| IT616267A (en:Method) | |
| GB892922A (en) | 1962-04-04 |
| CH353096A (de) | 1961-03-31 |
| FR1184459A (fr) | 1959-07-22 |
| NL114041C (en:Method) | |
| NL113914C (en:Method) | |
| GB842756A (en) | 1960-07-27 |
| NL233996A (en:Method) | |
| US3086182A (en) | 1963-04-16 |
| US2994047A (en) | 1961-07-25 |
| CH358874A (de) | 1961-12-15 |
| SE178175C1 (en:Method) | 1962-02-13 |