NL32218C - - Google Patents
Info
- Publication number
- NL32218C NL32218C NL32218DA NL32218C NL 32218 C NL32218 C NL 32218C NL 32218D A NL32218D A NL 32218DA NL 32218 C NL32218 C NL 32218C
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (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 |
|---|---|---|---|
| US450128A US1808297A (en) | 1930-05-06 | 1930-05-06 | Loud speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL32218C true NL32218C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=23786874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL32218D NL32218C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1930-05-06 |
Country Status (5)
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2423037A (en) * | 1944-11-03 | 1947-06-24 | Operadio Mfg Co | Electrodynamic loud-speaker |
| US2537723A (en) * | 1946-11-22 | 1951-01-09 | Truvox Engineering Company Ltd | Electromagnetic transducer |
| DE1177210B (de) * | 1962-12-14 | 1964-09-03 | Lehner Fernsprech Signal | Elektroakustischer Wandler fuer telefonische Zwecke |
| GB2050755B (en) * | 1979-04-10 | 1983-06-29 | Suwa Seikosha Kk | Dynamic loudspeaker |
| GB8923681D0 (en) * | 1989-10-20 | 1989-12-06 | Lyth Charles D | Improvements in or relating to loudspeakers |
| USD443260S1 (en) | 2000-07-31 | 2001-06-05 | Jeff B. Jordan | Audio speaker |
| USD442945S1 (en) | 2000-09-26 | 2001-05-29 | Hersel Mahgerefteh | Woofer |
| GB0102780D0 (en) * | 2001-02-03 | 2001-03-21 | K H Technology Corp | Loudspeaker assemblies |
| USD733792S1 (en) * | 2013-10-07 | 2015-07-07 | Rony Samimrad | Guitar |
| USD776086S1 (en) * | 2014-04-23 | 2017-01-10 | Martin Audio Limited | Loudspeaker |
| USD783577S1 (en) * | 2015-09-16 | 2017-04-11 | Stillwater Designs And Audio, Inc. | Subwoofer |
| USD788074S1 (en) * | 2015-10-09 | 2017-05-30 | Bose Corporation | Low profile speaker |
-
0
- BE BE379042D patent/BE379042A/xx unknown
- NL NL32218D patent/NL32218C/xx active
-
1930
- 1930-05-06 US US450128A patent/US1808297A/en not_active Expired - Lifetime
-
1931
- 1931-04-11 FR FR715100D patent/FR715100A/fr not_active Expired
- 1931-04-15 GB GB11145/31A patent/GB369030A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1808297A (en) | 1931-06-02 |
| BE379042A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | |
| FR715100A (fr) | 1931-11-25 |
| GB369030A (en) | 1932-03-17 |