NL22116C - - Google Patents
Info
- Publication number
- NL22116C NL22116C NL22116DA NL22116C NL 22116 C NL22116 C NL 22116C NL 22116D A NL22116D A NL 22116DA NL 22116 C NL22116 C NL 22116C
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (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 |
|---|---|---|---|
| US274847XA | 1926-07-24 | 1926-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL22116C true NL22116C (https=) |
Family
ID=21837996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL22116D NL22116C (https=) | 1926-07-24 |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR638086A (https=) |
| GB (1) | GB274847A (https=) |
| NL (1) | NL22116C (https=) |
-
0
- NL NL22116D patent/NL22116C/xx active
-
1927
- 1927-07-13 GB GB18573/27A patent/GB274847A/en not_active Expired
- 1927-07-21 FR FR638086D patent/FR638086A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR638086A (fr) | 1928-05-15 |
| GB274847A (en) | 1928-02-02 |