FR4645E - Microphone - Google Patents
MicrophoneInfo
- Publication number
- FR4645E FR4645E FR4645A FR4645DA FR4645E FR 4645 E FR4645 E FR 4645E FR 4645 A FR4645 A FR 4645A FR 4645D A FR4645D A FR 4645DA FR 4645 E FR4645 E FR 4645E
- Authority
- FR
- France
- Prior art keywords
- microphone
- Prior art date
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR341035T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR4645E true FR4645E (en) | 1905-09-02 |
Family
ID=8891865
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR4645A Expired FR4645E (en) | Microphone | ||
| FR341035A Expired FR341035A (en) | 1904-03-08 | Microphone |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR341035A Expired FR341035A (en) | 1904-03-08 | Microphone |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE171536C (en) |
| FR (2) | FR341035A (en) |
-
0
- FR FR4645A patent/FR4645E/en not_active Expired
- DE DENDAT171536D patent/DE171536C/de active Active
-
1904
- 1904-03-08 FR FR341035A patent/FR341035A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR341035A (en) | 1904-07-27 |
| DE171536C (en) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR351867A (en) | Microphone | |
| FR4645E (en) | Microphone | |
| CH32741A (en) | microphone | |
| CH33518A (en) | Microphone | |
| FR352251A (en) | Aries-siphoid | |
| DK8078C (en) | Microphone. | |
| DK8079C (en) | Microphone. | |
| FR352133A (en) | Electro-hydrodynamic microphone | |
| FR355637A (en) | Busc | |
| FR353038A (en) | Aero-thermosyphon | |
| FR350691A (en) | Auto-dynamo | |
| FR353827A (en) | Acetylenogen | |
| FR356764A (en) | Blutoir | |
| FR353215A (en) | Stoup | |
| FR353191A (en) | Hydro-vacuum | |
| FR355896A (en) | Blutoir | |
| FR352922A (en) | Bagger-sorter | |
| FR352701A (en) | Cinematoscope | |
| FR357823A (en) | Aumonière | |
| FR352164A (en) | Lampion | |
| FR351995A (en) | Jockstrap | |
| FR351444A (en) | Filter-measurement | |
| FR351259A (en) | Plansichter | |
| FI2322A (en) | Mjölkningsapparat | |
| FI2386A (en) | Vagntåg |