NL56524C - - Google Patents
Info
- Publication number
- NL56524C NL56524C NL100442A NL100442A NL56524C NL 56524 C NL56524 C NL 56524C NL 100442 A NL100442 A NL 100442A NL 100442 A NL100442 A NL 100442A NL 56524 C NL56524 C NL 56524C
- 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
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE217004X | 1940-01-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL56524C true NL56524C (fr) | 1944-06-15 |
Family
ID=5830521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL100442A NL56524C (fr) | 1940-01-15 | 1941-02-22 |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH217004A (fr) |
| NL (1) | NL56524C (fr) |
-
1941
- 1941-02-10 CH CH217004D patent/CH217004A/de unknown
- 1941-02-22 NL NL100442A patent/NL56524C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| CH217004A (de) | 1941-09-30 |