NL234436A - - Google Patents
Info
- Publication number
- NL234436A NL234436A NL234436DA NL234436A NL 234436 A NL234436 A NL 234436A NL 234436D A NL234436D A NL 234436DA NL 234436 A NL234436 A NL 234436A
- 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL234436 | 1958-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL234436A true NL234436A (en) |
Family
ID=19751489
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL108508D NL108508C (en) | 1958-12-19 | ||
| NL234436D NL234436A (en) | 1958-12-19 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL108508D NL108508C (en) | 1958-12-19 |
Country Status (6)
| Country | Link |
|---|---|
| CH (1) | CH375541A (en) |
| DE (1) | DE1115302B (en) |
| ES (1) | ES254241A1 (en) |
| FR (1) | FR1242763A (en) |
| GB (1) | GB934632A (en) |
| NL (2) | NL234436A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4187635A (en) * | 1978-04-03 | 1980-02-12 | Deissler Robert J | Method and apparatus for sound production |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2263408A (en) * | 1936-04-11 | 1941-11-18 | Lakhovsky George | Means for improving the sound emitted by microphones, loudspeakers, and the like |
| DE1073546B (en) * | 1955-05-26 | 1960-01-21 | Rudolf Gorike Wien Dr | Directional microphone with low vibration and wind sensitivity |
-
0
- NL NL108508D patent/NL108508C/xx active
- NL NL234436D patent/NL234436A/xx unknown
-
1959
- 1959-12-15 DE DEN17646A patent/DE1115302B/en active Pending
- 1959-12-16 GB GB4278159A patent/GB934632A/en not_active Expired
- 1959-12-16 CH CH8187759A patent/CH375541A/en unknown
- 1959-12-16 ES ES0254241A patent/ES254241A1/en not_active Expired
- 1959-12-17 FR FR813330A patent/FR1242763A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1242763A (en) | 1960-09-30 |
| NL108508C (en) | |
| GB934632A (en) | 1963-08-21 |
| CH375541A (en) | 1964-02-29 |
| ES254241A1 (en) | 1960-03-01 |
| DE1115302B (en) | 1961-10-19 |