NL21086C - - Google Patents
Info
- Publication number
- NL21086C NL21086C NL21086DA NL21086C NL 21086 C NL21086 C NL 21086C NL 21086D A NL21086D A NL 21086DA NL 21086 C NL21086 C NL 21086C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US263480XA | 1925-12-22 | 1925-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL21086C true NL21086C (https=) |
Family
ID=21831303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL21086D NL21086C (https=) | 1925-12-22 |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB263480A (https=) |
| NL (1) | NL21086C (https=) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2127650A (en) * | 1982-08-07 | 1984-04-11 | Univ Liverpool | Moving coil loudspeaker |
-
0
- NL NL21086D patent/NL21086C/xx active
-
1926
- 1926-04-13 GB GB9735/26A patent/GB263480A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB263480A (en) | 1927-09-13 |