BE334366A - - Google Patents
Info
- Publication number
- BE334366A BE334366A BE334366DA BE334366A BE 334366 A BE334366 A BE 334366A BE 334366D A BE334366D A BE 334366DA BE 334366 A BE334366 A BE 334366A
- Authority
- BE
- Belgium
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)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US34255A US1630008A (en) | 1925-06-01 | 1925-06-01 | Cone-type loud speaker |
Publications (1)
Publication Number | Publication Date |
---|---|
BE334366A true BE334366A (es) |
Family
ID=21875256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE334366D BE334366A (es) | 1925-06-01 |
Country Status (6)
Country | Link |
---|---|
US (1) | US1630008A (es) |
BE (1) | BE334366A (es) |
DE (1) | DE551526C (es) |
FR (1) | FR616148A (es) |
GB (2) | GB252685A (es) |
NL (1) | NL21057C (es) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2810447A (en) * | 1955-05-31 | 1957-10-22 | Ford Motor Co | Rear seat speaker |
US5418337A (en) * | 1993-05-28 | 1995-05-23 | Bose Corporation | Loudspeaker driver surrounding |
-
0
- NL NL21057D patent/NL21057C/xx active
- BE BE334366D patent/BE334366A/xx unknown
-
1925
- 1925-06-01 US US34255A patent/US1630008A/en not_active Expired - Lifetime
-
1926
- 1926-04-13 GB GB9728/26A patent/GB252685A/en not_active Expired
- 1926-04-13 GB GB28790/26A patent/GB261426A/en not_active Expired
- 1926-05-14 FR FR616148D patent/FR616148A/fr not_active Expired
- 1926-05-29 DE DEH106714D patent/DE551526C/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB261426A (en) | 1927-04-21 |
NL21057C (es) | |
DE551526C (de) | 1932-06-02 |
GB252685A (en) | 1927-06-02 |
FR616148A (fr) | 1927-01-24 |
US1630008A (en) | 1927-05-24 |