FR743749A - - Google Patents
Info
- Publication number
- FR743749A FR743749A FR743749DA FR743749A FR 743749 A FR743749 A FR 743749A FR 743749D A FR743749D A FR 743749DA FR 743749 A FR743749 A FR 743749A
- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL394533X | 1932-01-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR743749A true FR743749A (cs) | 1933-04-05 |
Family
ID=19785836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR743749D Expired FR743749A (cs) | 1932-01-23 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE391227A (cs) |
| FR (1) | FR743749A (cs) |
| GB (1) | GB394533A (cs) |
-
0
- BE BE391227D patent/BE391227A/xx unknown
- FR FR743749D patent/FR743749A/fr not_active Expired
-
1932
- 1932-10-07 GB GB27972/32A patent/GB394533A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB394533A (en) | 1933-06-29 |
| BE391227A (cs) |