FR2203221A1 - - Google Patents
Info
- Publication number
- FR2203221A1 FR2203221A1 FR7236686A FR7236686A FR2203221A1 FR 2203221 A1 FR2203221 A1 FR 2203221A1 FR 7236686 A FR7236686 A FR 7236686A FR 7236686 A FR7236686 A FR 7236686A FR 2203221 A1 FR2203221 A1 FR 2203221A1
- Authority
- FR
- France
- 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.)
- Granted
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
- H03H9/46—Filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B17/00—Generation of oscillations using radiation source and detector, e.g. with interposed variable obturator
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7213651.A NL161630C (nl) | 1972-10-09 | 1972-10-09 | Foto-elektrische inrichting voor het opwekken van een laagfrequente harmonische oscillatie. |
DE2249850A DE2249850A1 (de) | 1972-10-09 | 1972-10-11 | Fotoelektrisches geraet zur erzeugung von harmonischen niederfrequenzschwingungen |
FR7236686A FR2203221B1 (US20030157025A1-20030821-C00031.png) | 1972-10-09 | 1972-10-17 | |
US00298633A US3805190A (en) | 1972-10-09 | 1972-10-18 | Photoelectric device for generating and filtering low-frequency harmonic oscillations |
CH1556072A CH547037A (de) | 1972-10-09 | 1972-10-25 | Als oszillator oder filter verwendbares elektrisches geraet. |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7213651.A NL161630C (nl) | 1972-10-09 | 1972-10-09 | Foto-elektrische inrichting voor het opwekken van een laagfrequente harmonische oscillatie. |
DE2249850A DE2249850A1 (de) | 1972-10-09 | 1972-10-11 | Fotoelektrisches geraet zur erzeugung von harmonischen niederfrequenzschwingungen |
FR7236686A FR2203221B1 (US20030157025A1-20030821-C00031.png) | 1972-10-09 | 1972-10-17 | |
US00298633A US3805190A (en) | 1972-10-09 | 1972-10-18 | Photoelectric device for generating and filtering low-frequency harmonic oscillations |
CH1556072 | 1972-10-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2203221A1 true FR2203221A1 (US20030157025A1-20030821-C00031.png) | 1974-05-10 |
FR2203221B1 FR2203221B1 (US20030157025A1-20030821-C00031.png) | 1976-08-20 |
Family
ID=27509518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7236686A Expired FR2203221B1 (US20030157025A1-20030821-C00031.png) | 1972-10-09 | 1972-10-17 |
Country Status (5)
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56120924A (en) * | 1980-02-29 | 1981-09-22 | Anritsu Corp | Vibrator for optical chopper of light detecting device |
GB2121953B (en) * | 1982-06-10 | 1985-09-04 | Itt Ind Ltd | Improvements in transducers |
FR2582878B1 (fr) * | 1985-05-30 | 1989-07-13 | France Etat Armement | Resonateur a materiau non piezoelectrique a grand coefficient de qualite |
US5596477A (en) * | 1993-05-03 | 1997-01-21 | Faraday, Inc. | Contactless signaling device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR681048A (fr) * | 1928-10-26 | 1930-05-08 | Philips Nv | Installation destinée à engendrer des oscillations électriques à fréquence constante |
US1958071A (en) * | 1932-02-01 | 1934-05-08 | Heintz & Kaufman Ltd | Electrically driven vibrator |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1979296A (en) * | 1931-10-19 | 1934-11-06 | William H Sweeney | Television apparatus |
US3178579A (en) * | 1960-11-23 | 1965-04-13 | Kollsman Instr Corp | Photosensitive tuning fork scanner |
-
1972
- 1972-10-09 NL NL7213651.A patent/NL161630C/xx not_active IP Right Cessation
- 1972-10-11 DE DE2249850A patent/DE2249850A1/de not_active Ceased
- 1972-10-17 FR FR7236686A patent/FR2203221B1/fr not_active Expired
- 1972-10-18 US US00298633A patent/US3805190A/en not_active Expired - Lifetime
- 1972-10-25 CH CH1556072A patent/CH547037A/xx not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR681048A (fr) * | 1928-10-26 | 1930-05-08 | Philips Nv | Installation destinée à engendrer des oscillations électriques à fréquence constante |
US1958071A (en) * | 1932-02-01 | 1934-05-08 | Heintz & Kaufman Ltd | Electrically driven vibrator |
Also Published As
Publication number | Publication date |
---|---|
DE2249850A1 (de) | 1974-04-25 |
FR2203221B1 (US20030157025A1-20030821-C00031.png) | 1976-08-20 |
NL7213651A (US20030157025A1-20030821-C00031.png) | 1974-04-11 |
NL161630C (nl) | 1979-09-17 |
US3805190A (en) | 1974-04-16 |
CH547037A (de) | 1974-03-15 |
NL161630B (nl) | 1979-09-17 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |