NL27519C - - Google Patents
Info
- Publication number
- NL27519C NL27519C NL27519DA NL27519C NL 27519 C NL27519 C NL 27519C NL 27519D A NL27519D A NL 27519DA NL 27519 C NL27519 C NL 27519C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/02—Loudspeakers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Electromagnetism (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH116853T | 1924-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL27519C true NL27519C (en:Method) |
Family
ID=4375856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL27519D NL27519C (en:Method) | 1924-12-23 |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH116853A (en:Method) |
| NL (1) | NL27519C (en:Method) |
-
0
- NL NL27519D patent/NL27519C/xx active
-
1924
- 1924-12-23 CH CH116853D patent/CH116853A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH116853A (fr) | 1926-10-01 |