NL34769C - - Google Patents
Info
- Publication number
- NL34769C NL34769C NL34769DA NL34769C NL 34769 C NL34769 C NL 34769C NL 34769D A NL34769D A NL 34769DA NL 34769 C NL34769 C NL 34769C
- 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
- H04R9/046—Construction
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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL381803X | 1931-03-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL34769C true NL34769C (de) |
Family
ID=19785660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL34769D NL34769C (de) | 1931-03-07 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE385854A (de) |
| FR (1) | FR730280A (de) |
| GB (1) | GB381803A (de) |
| NL (1) | NL34769C (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3963882A (en) * | 1975-03-14 | 1976-06-15 | Control Data Corporation | Boron or graphite reinforced voice coil and manufacturing process |
| GB2366474B (en) * | 2000-09-01 | 2005-02-16 | Schlumberger Ltd | Geophones |
-
0
- BE BE385854D patent/BE385854A/xx unknown
- NL NL34769D patent/NL34769C/xx active
-
1932
- 1932-01-20 GB GB1801/32A patent/GB381803A/en not_active Expired
- 1932-01-21 FR FR730280D patent/FR730280A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR730280A (fr) | 1932-08-10 |
| GB381803A (en) | 1932-10-13 |
| BE385854A (de) |