FR1558171A - - Google Patents
Info
- Publication number
- FR1558171A FR1558171A FR1558171DA FR1558171A FR 1558171 A FR1558171 A FR 1558171A FR 1558171D A FR1558171D A FR 1558171DA FR 1558171 A FR1558171 A FR 1558171A
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/18—Modifications of frequency-changers for eliminating image frequencies
-
- 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
- H03B21/00—Generation of oscillations by combining unmodulated signals of different frequencies
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manipulation Of Pulses (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Networks Using Active Elements (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6704376A NL6704376A (forum.php) | 1967-03-25 | 1967-03-25 | |
| US12389471A | 1971-03-12 | 1971-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR1558171A true FR1558171A (forum.php) | 1969-02-21 |
Family
ID=26644168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1558171D Expired FR1558171A (forum.php) | 1967-03-25 | 1968-03-25 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3745473A (forum.php) |
| BE (1) | BE712750A (forum.php) |
| DE (1) | DE1616450B2 (forum.php) |
| FR (1) | FR1558171A (forum.php) |
| GB (1) | GB1203878A (forum.php) |
| NL (1) | NL6704376A (forum.php) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3882402A (en) * | 1973-02-26 | 1975-05-06 | Digital Equipment Corp | Circuit for transmitting velocity signals derived from position signals |
| DE2420638A1 (de) * | 1974-04-27 | 1976-03-18 | Philips Nv | Schaltungsanordnung zur erzeugung eines summen- und/oder differenzsignals |
| JPS5179542A (forum.php) * | 1975-01-06 | 1976-07-10 | Tokyo Shibaura Electric Co | |
| US4106096A (en) * | 1976-08-30 | 1978-08-08 | Bell Telephone Laboratories, Incorporated | Derivative measurement by frequency mixing |
| US4446447A (en) * | 1980-12-22 | 1984-05-01 | Ford Motor Company | Circuit for converting pressure variation to frequency variation |
-
1967
- 1967-03-25 NL NL6704376A patent/NL6704376A/xx unknown
-
1968
- 1968-03-14 DE DE1968N0032287 patent/DE1616450B2/de active Granted
- 1968-03-22 GB GB03970/68A patent/GB1203878A/en not_active Expired
- 1968-03-25 BE BE712750D patent/BE712750A/xx unknown
- 1968-03-25 FR FR1558171D patent/FR1558171A/fr not_active Expired
-
1971
- 1971-03-12 US US00123894A patent/US3745473A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE1616450B2 (de) | 1976-07-08 |
| US3745473A (en) | 1973-07-10 |
| BE712750A (forum.php) | 1968-09-25 |
| NL6704376A (forum.php) | 1968-09-26 |
| GB1203878A (en) | 1970-09-03 |
| DE1616450A1 (de) | 1971-04-29 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |