FR960440A - - Google Patents
Info
- Publication number
- FR960440A FR960440A FR960440DA FR960440A FR 960440 A FR960440 A FR 960440A FR 960440D A FR960440D A FR 960440DA FR 960440 A FR960440 A FR 960440A
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US296823A US2267808A (en) | 1939-09-27 | 1939-09-27 | Electromagnetic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR960440A true FR960440A (fr) | 1950-04-18 |
Family
ID=23143722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR960440D Expired FR960440A (fr) | 1939-09-27 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2267808A (fr) |
| FR (1) | FR960440A (fr) |
| GB (1) | GB653844A (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2443784A (en) * | 1943-05-17 | 1948-06-22 | Barber Coleman Company | Relay |
| US2454973A (en) * | 1944-12-01 | 1948-11-30 | Gen Electric | Polarized electromagnetic control device |
| US2912523A (en) * | 1955-10-26 | 1959-11-10 | Industrial Res Prod Inc | Electro-acoustic transducer |
| US3222796A (en) * | 1962-06-11 | 1965-12-14 | Cryodry Corp | Method of freeze-drying foods by direct gas injection |
-
0
- FR FR960440D patent/FR960440A/fr not_active Expired
-
1939
- 1939-09-27 US US296823A patent/US2267808A/en not_active Expired - Lifetime
-
1948
- 1948-02-27 GB GB6069/48A patent/GB653844A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB653844A (en) | 1951-05-30 |
| US2267808A (en) | 1941-12-30 |