FR719964A - Perfectionnements aux haut-parleurs - Google Patents
Perfectionnements aux haut-parleursInfo
- Publication number
- FR719964A FR719964A FR719964DA FR719964A FR 719964 A FR719964 A FR 719964A FR 719964D A FR719964D A FR 719964DA FR 719964 A FR719964 A FR 719964A
- 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
- H04R9/025—Magnetic circuit
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US387673XA | 1931-05-18 | 1931-05-18 | |
FR719964T | 1931-07-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR719964A true FR719964A (fr) | 1932-02-18 |
Family
ID=21901775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR719964D Expired FR719964A (fr) | 1931-05-18 | 1931-07-10 | Perfectionnements aux haut-parleurs |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR719964A (fr) |
GB (1) | GB387673A (fr) |
-
1931
- 1931-07-10 FR FR719964D patent/FR719964A/fr not_active Expired
- 1931-08-07 GB GB22407/31A patent/GB387673A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB387673A (en) | 1933-02-07 |
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