FR684154A - Loudspeaker enhancements - Google Patents
Loudspeaker enhancementsInfo
- Publication number
- FR684154A FR684154A FR684154DA FR684154A FR 684154 A FR684154 A FR 684154A FR 684154D A FR684154D A FR 684154DA FR 684154 A FR684154 A FR 684154A
- Authority
- FR
- France
- Prior art keywords
- enhancements
- loudspeaker
- loudspeaker enhancements
- Prior art date
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US684154XA | 1929-03-27 | 1929-03-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR684154A true FR684154A (en) | 1930-06-23 |
Family
ID=22082435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR684154D Expired FR684154A (en) | 1929-03-27 | 1929-10-29 | Loudspeaker enhancements |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE364906A (en) |
FR (1) | FR684154A (en) |
-
0
- BE BE364906D patent/BE364906A/xx unknown
-
1929
- 1929-10-29 FR FR684154D patent/FR684154A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE364906A (en) |
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