FR2114999B1 - - Google Patents
Info
- Publication number
- FR2114999B1 FR2114999B1 FR7041766A FR7041766A FR2114999B1 FR 2114999 B1 FR2114999 B1 FR 2114999B1 FR 7041766 A FR7041766 A FR 7041766A FR 7041766 A FR7041766 A FR 7041766A FR 2114999 B1 FR2114999 B1 FR 2114999B1
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Transducers For Ultrasonic Waves (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7041766A FR2114999B1 (en) | 1970-11-20 | 1970-11-20 | |
DE19712157325 DE2157325B2 (en) | 1970-11-20 | 1971-11-18 | Electrostatic ultrasonic wave transducer |
GB5419271A GB1376335A (en) | 1970-11-20 | 1971-11-22 | Electrostatic transducers for converting electrical signals into ultrasonic signals and vice versa |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7041766A FR2114999B1 (en) | 1970-11-20 | 1970-11-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2114999A1 FR2114999A1 (en) | 1972-07-07 |
FR2114999B1 true FR2114999B1 (en) | 1973-11-23 |
Family
ID=9064485
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7041766A Expired FR2114999B1 (en) | 1970-11-20 | 1970-11-20 |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2157325B2 (en) |
FR (1) | FR2114999B1 (en) |
GB (1) | GB1376335A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2199430A5 (en) * | 1972-09-08 | 1974-04-05 | Anvar | |
GB2072458A (en) * | 1980-03-03 | 1981-09-30 | Tape Developments Ltd C | Electroacoustic transducers |
CA1277415C (en) * | 1986-04-11 | 1990-12-04 | Lorne A. Whitehead | Elastomer membrane enhanced electrostatic transducer |
CN111171359B (en) * | 2020-01-07 | 2021-03-02 | 南京大学 | Method for activating polytetrafluoroethylene and application |
-
1970
- 1970-11-20 FR FR7041766A patent/FR2114999B1/fr not_active Expired
-
1971
- 1971-11-18 DE DE19712157325 patent/DE2157325B2/en not_active Withdrawn
- 1971-11-22 GB GB5419271A patent/GB1376335A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2157325A1 (en) | 1972-06-15 |
GB1376335A (en) | 1974-12-04 |
FR2114999A1 (en) | 1972-07-07 |
DE2157325B2 (en) | 1980-06-04 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |