NL37471C - - Google Patents
Info
- Publication number
- NL37471C NL37471C NL66132A NL66132A NL37471C NL 37471 C NL37471 C NL 37471C NL 66132 A NL66132 A NL 66132A NL 66132 A NL66132 A NL 66132A NL 37471 C NL37471 C NL 37471C
- 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
- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE759064X | 1932-09-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL37471C true NL37471C (xx) | 1936-02-15 |
Family
ID=19755621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL66132A NL37471C (xx) | 1932-09-07 | 1933-07-25 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR759064A (xx) |
| NL (1) | NL37471C (xx) |
-
1933
- 1933-07-25 NL NL66132A patent/NL37471C/xx active
- 1933-08-01 FR FR759064D patent/FR759064A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR759064A (fr) | 1934-01-29 |