NL50893C - - Google Patents
Info
- Publication number
- NL50893C NL50893C NL50893DA NL50893C NL 50893 C NL50893 C NL 50893C NL 50893D A NL50893D A NL 50893DA NL 50893 C NL50893 C NL 50893C
- 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)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE510707X | 1937-02-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL50893C true NL50893C (en) | 1900-01-01 |
Family
ID=6547523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL50893D NL50893C (en) | 1937-02-15 |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR833384A (en) |
| GB (1) | GB510707A (en) |
| NL (1) | NL50893C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE976429C (en) * | 1950-06-08 | 1963-09-19 | Emil Dr Podszus | Foam membrane for loudspeakers and process for their manufacture |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE977538C (en) * | 1943-03-16 | 1966-12-15 | Emil Dr Podszus | Process for the production of loudspeaker diaphragms with a foam structure |
| DE972185C (en) * | 1950-10-18 | 1959-06-04 | Emil Dr Podszus | Membrane with foam structure for loudspeakers |
| DE965995C (en) * | 1950-11-25 | 1957-07-04 | Dr Emil Podszus | Speaker cone |
| US2763333A (en) * | 1951-10-03 | 1956-09-18 | Petts Josephine Mason | Sound transmission and reproduction |
| US2981360A (en) * | 1954-02-18 | 1961-04-25 | Bayer Ag | Sound-absorbing systems |
| DE1098542B (en) * | 1954-09-18 | 1961-02-02 | Dr Emil Podszus | Loudspeaker made up of several elements |
| US2959242A (en) * | 1954-12-21 | 1960-11-08 | Bayer Ag | Sound-absorbing system |
| US2905260A (en) * | 1955-02-24 | 1959-09-22 | Muter Company | Loud speaker diaphragm |
| US2881850A (en) * | 1955-07-25 | 1959-04-14 | Bonn Leonard | Infinite baffle comprising a spherical shell of foamed plastic |
| US2840177A (en) * | 1955-07-28 | 1958-06-24 | Alexander I Abrahams | Loudspeaker diaphragm support |
| US3082838A (en) * | 1959-11-03 | 1963-03-26 | Walter S Gajdosik | Toy communication device |
| US3111187A (en) * | 1959-11-23 | 1963-11-19 | H J Leak & Company Ltd | Diaphragm for electro acoustic transducer |
| US3164221A (en) * | 1961-06-06 | 1965-01-05 | Rosen Alfred H | Low frequency loudspeaker system |
| DE1256261B (en) * | 1962-01-15 | 1967-12-14 | Akustische | Oscillating plate for creating an artificial reverberation |
-
0
- NL NL50893D patent/NL50893C/xx active
-
1938
- 1938-02-04 GB GB3557/38A patent/GB510707A/en not_active Expired
- 1938-02-08 FR FR833384D patent/FR833384A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE976429C (en) * | 1950-06-08 | 1963-09-19 | Emil Dr Podszus | Foam membrane for loudspeakers and process for their manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| FR833384A (en) | 1938-10-20 |
| GB510707A (en) | 1939-08-04 |