NL30952C - - Google Patents
Info
- Publication number
- NL30952C NL30952C NL30952DA NL30952C NL 30952 C NL30952 C NL 30952C NL 30952D A NL30952D A NL 30952DA NL 30952 C NL30952 C NL 30952C
- Authority
- NL
- Netherlands
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
- H04R9/04—Construction, mounting, or centering of coil
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL713126X | 1930-04-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL30952C true NL30952C (fr) |
Family
ID=19814868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL30952D NL30952C (fr) | 1930-04-03 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR713126A (fr) |
| NL (1) | NL30952C (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3328537A (en) * | 1964-01-09 | 1967-06-27 | Hecht William | High frequency sound translating device |
| US3983337A (en) * | 1973-06-21 | 1976-09-28 | Babbco, Ltd. | Broad-band acoustic speaker |
| CN2523162Y (zh) * | 2002-01-28 | 2002-11-27 | 斯贝克电子（嘉善）有限公司 | 能防止散圈的音圈 |
-
0
- NL NL30952D patent/NL30952C/xx active
-
1931
- 1931-03-12 FR FR713126D patent/FR713126A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR713126A (fr) | 1931-10-22 |