FR632915A - - Google Patents
Info
- Publication number
- FR632915A FR632915A FR632915DA FR632915A FR 632915 A FR632915 A FR 632915A FR 632915D A FR632915D A FR 632915DA FR 632915 A FR632915 A FR 632915A
- 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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR632915A true FR632915A (fr) | 1928-01-18 |
Family
ID=1541956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR632915D Expired FR632915A (fr) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR632915A (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE935134C (de) * | 1953-01-15 | 1955-11-10 | Telefunken Gmbh | Elektroakustischer Wandler, insbesondere Kristallmikrofon |
| DE1120504B (de) * | 1958-03-07 | 1961-12-28 | Hugh Shaler Knowles | Schallaufnahme- bzw. Wiedergabegeraet |
-
0
- FR FR632915D patent/FR632915A/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE935134C (de) * | 1953-01-15 | 1955-11-10 | Telefunken Gmbh | Elektroakustischer Wandler, insbesondere Kristallmikrofon |
| DE1120504B (de) * | 1958-03-07 | 1961-12-28 | Hugh Shaler Knowles | Schallaufnahme- bzw. Wiedergabegeraet |