GB190916955A - - Google Patents
Info
- Publication number
- GB190916955A GB190916955A GBJ16955DA GB190916955A GB 190916955 A GB190916955 A GB 190916955A GB J16955D A GBJ16955D A GB J16955DA GB 190916955 A GB190916955 A GB 190916955A
- Authority
- GB
- United Kingdom
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
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
- H04R21/00—Variable-resistance transducers
- H04R21/02—Microphones
- H04R21/023—Microphones with more than one granular chamber
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB191116955T | 1911-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB190916955A true GB190916955A (en) |
Family
ID=34357432
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBJ16955D Active GB190916955A (en) | 1911-07-24 | ||
| GB191116955D Expired GB191116955A (en) | 1911-07-24 | 1911-07-24 | Transmitter for Telephones and other Sound Transmitting Instruments. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB191116955D Expired GB191116955A (en) | 1911-07-24 | 1911-07-24 | Transmitter for Telephones and other Sound Transmitting Instruments. |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR433236A (en) |
| GB (2) | GB191116955A (en) |
-
0
- GB GBJ16955D patent/GB190916955A/en active Active
-
1911
- 1911-07-24 GB GB191116955D patent/GB191116955A/en not_active Expired
- 1911-08-14 FR FR433236A patent/FR433236A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR433236A (en) | 1911-12-28 |
| GB191116955A (en) | 1912-05-30 |